- Type of paper
: Book
Title: Strength of Ship, Part 3
- Authors:
- Uršić, Josip (57121)
Publisher: Sveučilište u Zagrebu
ISBN: 86-7819-048-5
Year: 1992
Number of pages: 645
Number of references: 242
Language: hrvatski
Summary: While in the first two volumens of the textbook "The
Strength ofShip" the problems of longitudinal and transverse strength
ofship structures are described, this third volume deals withfollowing
topics of the ship structure strength: the theory ofisotropic and
ortothropic plates loaded in their own plane andperpendicularly to it, the
stability of beams, grillages andplates, the complex bending under the
simultaneous action oftransversal and axial forces, the calculation of
riveted andwelded connections. For each of these problems, which
areelaborated in separate chapters of the book, the theoreticalbackground
is described, the calculation methods are developedand numerical examples,
as the illustration of the developedtheory, are worked out. Many diagrams
and tables, whichfacilitate the practical calculations are given. In the
lastchapter the history of scientific investigations, carried out
forsolving the problem of the ship strength, is presented.
Keywords: strength of ship, strength of materials, ship's structure
- Type of paper
: Paper in book
Title: Nettwork plan
- Authors:
- Čorić, Većeslav (77520)
- Editors
- Mataja, Marko
Publisher: Sysprint & Bug
ISBN: 953-6041-04-9
Year: 1995
Pages: from 603 to 626
Language: hrvatski
Keywords: PC hardware, PC software
- Type of paper
: Paper in journal
Title: Structure design of catamarane crane vessel
- Authors:
- Senjanović, Ivo (57053)
- Čorić, Većeslav (77520)
- Begonja, Davor (999999)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 1
ISSN: 007 -215
Volume: 40
Year: 1992
Pages: from 21 to 34
Number of references: 31
Language: engleski
Summary: A design procedure for a catamarane vessel structure,
liftingcapacity 12000 kN, built in Shipyard 3.maj - Rijeka forSudoimport -
Moscow for operation in the Caspian Sea, isdescribed. Since no standard
design methods and rules wereavailable, cmprehensive research activities
were undertaken. Theinvestigations of the vessel motion, slamming,
hydrodynamicpressure distribution, sectional forces, structural analysis
andstructure optimisation were included. Also sea-keeping model testwere
performed. Several institutions were involved in the projectin order to
achieve the optimum vessel structure design.
Keywords: catamarane crane vessel, structure design, wave motion, optimisation, test
- Type of paper
: Paper in journal
Title: The marine propeller as a source of ship vibration
excitation
- Authors:
- Grubišić, Rajko (74052)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
ISSN: 007 -215
Volume: 38
Year: 1991
Pages: from 25 to 35
Number of references: 9
Language: hrvatski
Summary: The marine propeller is one of the main sources for
shipvibration excitation. Two most significant ways of excitationenergy
transmission from propeller to ship are presented;propeller bearing forces
transmitted via propeller shafting andhull surface force transmitted
through surrounding water. Foreach one the theoretical background as well
as calculationmethods developed in author's institution together with
adequateexamples are given. In addition two hydrodynamic processes
havingcrucial influence on dynamic properties of excitation, i.e.nonuniform
inflow in propeller plane and cavitation developmenton the propeller blade,
are discussed.
Keywords: cavitation, propeller, vibration excitation, wake
- Type of paper
: Paper in journal
Title: Strength analysys of steel doors shelter
- Authors:
- Grubišić, Rajko (74052)
- Fan, Ying (162386)
- Pušić, Velimir (67350)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 2
ISSN: 007 -215
Volume: 33
Year: 1991
Pages: from 159 to 169
Number of references: 2
Language: hrvatski
Summary: A strength analysis of a steel door for shelters,
loaded byan outdoor and indoor pressure of 300 and 60 kPa respectively,
ispresented. The analysis includes stress calculation andmeasurement. The
calculation procedure is based on the finiteelement method; a mathematical
model with an appropriate finiteelement mesh and boundary conditions is
developed. Themeasurement is accomplished by utilising the
strain-gaugetechnique; the gauges are mounted on position where according
tothe calculation, maximum stresses were expected. Finally,correlation of
the calculation and measurement results isperformed, in order to evaluate
the reliability of themathematical model.
Keywords: mathematical model, shelters, steel door, strength analysis
- Type of paper
: Paper in journal
Title: On torsional and warping stiffness of thin-walled girders
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: Thin-Walled Structures
ISSN: 0263-8231
Volume: 11
Year: 1991
Pages: from 233 to 276
Number of references: 20
Language: engleski
Summary: The torsional and warping stiffness of the beam
idealizationof thin-walled girders is defined from equivalence of
theirnatural frequencies for torsional vibration of sinusoidal modes.The
membrane and plate strip theory are employed for the girderstructural
members. The stiffness parameters are determinedanalytically for a few
girders of simple cross-section, while forthose of complex cross-section a
numerical procedure isformulated.
Keywords: thin-walled girder, torsional stiffness, warpin stiffness, free vibration, analytical method
- Type of paper
: Paper in journal
Title: Pontoon Torsional Strength Analysis Related to Ships with
Large Deck Openings
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: Journal of Ship Research
Number: 4
Volume: 35
Year: 1991
Pages: from 339 to 351
Number of references: 19
Language: engleski
Summary: The torsional problem of a pontoon, consisting of
channelmiddle part and rectangular tube peaks, is considered within
thehigher-order beam theory. The cross section and the contourcompatibility
conditions for assembling of the pontoon parts areinvestigated. The
acceptability of the introduced assumption ischecked by three-dimensional
finite-element model analysis. Somedeficiencies of the classical beam
theory regarding the girderstiffness are noticed. The finite-element
formulation to be usedfor the torsional analysis of the ship's hull with
large hatchopenings is given.
Keywords: pontoon, containership, torsional strength, higher-order beam theory, finite element method
- Type of paper
: Paper in journal
Title: Vibration analysis of passenger-car ferry Amorella
- Authors:
- Senjanović, Ivo (57053)
- Martinović, Iljo
- Grubišić, Izvor (76234)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 39
ISSN: 007 -215
Volume: 40
Year: 1991
Pages: from 39 to 51
Number of references: 15
Language: hrvatski
Summary: An approach to the vibration problem of a passenger-car
ferrycharacterised by rather strong vibration criteria and complexstructure
is described. Global and local vibration analysis areperformed by the
finite element method. Correlation analysis ofthe calculated and measured
results is satisfactory. Minimalvibration remedy undertaken after vibration
calculation andmeasurement respectively has reduced vibration response
withinthe permissible level.
Keywords: passenger-car ferry, vibration analysis
- Type of paper
: Paper in journal
Title: Comparison of Different Finite Element Analyses of the
Transverse Frame of a 350000 TDW Tanker
- Authors:
- Senjanović, Ivo (57053)
- Ziliotto, F.
- Ebert, J.
- Hakala, M.
- Pegg, N. G.
- Sakato, T.
- Wang, W. H.
Journal: Marine Structures
ISSN: 0951-8339
Volume: 4
Year: 1991
Pages: from 231 to 255
Number of references: 9
Language: engleski
Summary: In this report the finite element analysis of the
transverseframe of a tanker performed by some members of TechnicalCommittee
II.1 of ISSC '91 using their own calculationprocedures, are compared and
discussed. Some conclusions aredrawn about the effects of the different
hypotheses andassumption made in performing these analyses.
Keywords: comparison, finite element analyses, tanker transverse frame
- Type of paper
: Paper in journal
Title: The marine propeller as a source of ship vibration
excitation
- Authors:
- Grubišić, Rajko (74052)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 39
Year: 1991
Pages: from 25 to 38
Number of references: 9
Language: hrvatski
Summary: The marine propeller is one of the main sources for
shipvibration excitation. Two most significant ways of excitationenergy
transmission from propeller to ship are presented;propeller bearing forces
transmitted via propeller shafting andhull surface force transmitted
through surrounding water. Foreach one the theoretical background as well
as calculationmethods developed in author's institution together with
adequateexamples are given. In addition two hydrodynamic processes
havingcrucial influence on dynamic properties of excitation, i.e.nonuniform
inflow in propeller plane and cavitation developmenton the propeller blade,
are discussed.
Keywords: cavitation, propeller, vibration excitation, wake
- Type of paper
: Paper in journal
Title: A Higher-ordet Theory of Thin-walled Girders with
Application to Ship Structures
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: Computers & Structures
Number: 1
Volume: 43
Year: 1992
Pages: from 31 to 52
Number of references: 27
Language: engleski
Keywords: thin-walled structures, ship structures, higher-order beam theory, strip method, flexural stiffness, torsional stiffness, warping stiffness
- Type of paper
: Paper in journal
Title: Full Scale Obsevation of Propeller Blade Cavitation on a
Fast Small Ship
- Authors:
- Bobanac, Nenad (147720)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 3
Volume: 40
Year: 1992
Pages: from 117 to 120
Number of references: 2
Language: engleski
Summary: A method and equipment for the observation of hull
scalemarine propeller cavitation on a fast small ship is presented.The
design of observing windows enables their relatively cheapand fast
mounting/dismounting without having expensive shipdocking. The window with
an optical prism, flat with the bottomplating, improves view angles without
disturbing the ship wake,and can be successfully used for photographing of
hull scalemarine propeller cavitation. The method allows easier and
cheapercollecting of full scale cavitation pattern data.
Keywords: missing!
- Type of paper
: Paper in journal
Title: Nonlinear Oscillations of Cubic Dynamic Systems - Part 1:
Theoretical Considerations
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 2
ISSN: 007 - 215
Volume: 41
Year: 1993
Pages: from 99 to 107
Number of references: 23
Language: engleski
Summary: A non-linear differential equation of motion of
asingle-degree-of-freedom system with a cubic damping andrestoring force,
subjected to monoharmonic ( deterministic ) andpolyharmonic ( stochastic )
excitation, is solved exactly by theimproved harmonic balance method in the
frequency domain. Thesolution of the system of non-linear algebraic
equations in theformer and the latter case is achieved by a recurrent
andsimultaneous procedure respectively, employing an iterationalgorithm.
The principal and superharmonic response spectrum aswell as the jumping
phenomenon are analysed. The procedure may beapplied for ship rolling
analysis. For this purpose a cubicapproximation of the quadratic viscous
damping is given.
Keywords: theory of vibrations, nonlinear oscillations, ship rolling
- Type of paper
: Paper in journal
Title: Nonlinear Oscillations of Cubic Dynamic Systems - Part 2:
Illustartive examples
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 3
ISSN: 007 -215
Volume: 41
Year: 1993
Pages: from 163 to 170
Number of references: 11
Language: engleski
Summary: The recurrent and simultaneous procedure of the
improvedharmonic balance method for non-linear oscillations analysis
ofcubic dynamical systems caused by monoharmonic and polyharmonicexcitation
respectively, described in the first part of thearticle, is programmed. The
application of the theory and programis illustrated by a set of numerical
examples.
Keywords: theory of vibrations, nonlinear oscillations, ship rolling
- Type of paper
: Paper in journal
Title: Application of Nonlinear Dynamic Analysis method for
Nonlinear DynamicAnalysis
- Authors:
- Senjanović, Ivo (57053)
- Lozina, Željan (96925)
Journal: Computers & Structures
Number: 47
ISSN: -
Volume: 47
Year: 1993
Pages: from 927 to 937
Number of references: 12
Language: engleski
Summary: The application of the harmonic acceleration method,
whichshows some advantages in linear transient vibration analysiscompared
to the other commonly used methods, is extended tononlinear problems
employing the mode superposition technique andan iteration procedure.
Stability analysis shows that the methodis unconditionally stable. A higher
degree of accuracy isachieved. The efficiency of the method is illustrated
by somesimple numerical examples.
Keywords: nonlinear dynamics, time integration, harmonic acceleration method, stability analysis, accuracy analysis
- Type of paper
: Paper in journal
Title: A Finite Element Formulationa of Ship Cross-sectional
Stiffness Parameters
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 1
ISSN: 007 -215
Volume: 41
Year: 1993
Pages: from 27 to 36
Number of references: 27
Language: engleski
Summary: Shear area, torsional and warping module, as well as
normaland shear stress flows are determined by the finite elementmethod
employing a membrane strip element, within the classicaltheory of
thin-walled girders. Some deficiencies of the classicaltheory compared to
the higher-order theory are pointed out. Thefinite element procedure and
the developed computer program aretested for the case of simple
cross-section girder. Forillustration, the midship section properties of a
container shipare analysed.
Keywords: finite element method, ship hull stiffness
- Type of paper
: Paper in journal
Title: Analysis of a Two Vechicle Collision Kinematic
- Authors:
- Grubišić, Rajko (74052)
Journal: Strojarstvo
Number: 3
ISSN: 0562-1887
Volume: 35
Year: 1993
Pages: from 133 to 141
Number of references: 7
Language: hrvatski
Summary: Basic law of collision mechanics are connecting
kinematiccharacteristics of the start and end of two vehicle
collision.Several graphical and analytical methods, based on these laws,are
presented. Each of these presented methods is the nucleus ofan iterative
procedure that enables the correction of initialkinematic characteristics
at the collision end and a reliableassessment of those at the collision
start. Excentric andcolinear collision are considered. In Appendix a
practicalapplication of described methods on numerical examples is given.
Keywords: collision of bodies, kiematic parameters, two-vehicle collision
- Type of paper
: Paper in journal
Title: Harmonic Analysis of Nonlinear Oscillations of Cubic
Dynamical Systems
- Authors:
- Senjanović, Ivo (57053)
Journal: Journal of Ship Research
Number: 3
Volume: 38
Year: 1994
Pages: from 225 to 238
Language: engleski
Summary: Cubic dynamical systems are of great interest in marine
technology. The state of the art concerning ship rolling and vessel mooring
is described. Time-domain simulation is an indirect and unreliable way to
determine harmonic response characteristics of nonlinear systems;
frequency-domain analysis is therefore preferable. Numerical methods for
deterministic and random oscillations are aproximate. In order to establish
a general sophisticated method, the well-known harmonic balance method is
extended to polyharmonic excitation and improved to operate completely in
the frequency domain. Special recurrent and simultaneous algorithms are
given for the case of monoharmonic and polyharmonic excitation and multi-
and single-valued response respectively. Subharmonic oscillations are
analyzed using the general method. Random oscillations are treated as a set
of periodic responses caused by the same excitation spectrum and different
phase angles. Illustrative examples are chosen from marine technology
practice. Principal, superharmonic and subharmonic response spectra are
analyzed. The importance of further research which would cover other
nonlinear effects by harmonic alalysis is pointed out.
Keywords: cubic dynamical system, nonlinear oscillations, harmonic analysis
- Type of paper
: Paper in journal
Title: Dynamic Analysis of Ship Capsizing in Regular Waves
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 1
Volume: 42
Year: 1994
Pages: from 51 to 60
Language: engleski
Summary: A nonlinear differential equation of rolling motion of an
intact and damaged ship in regular sea waves is derived and solved by the
improved harmonic balance method and the harmonic acceleration method in
the frequency and time domain respectively. Nonlinear phenomena appearing
within transition from regular harmonic response to chaotic motion are
analysed. The stability and capsize boundary are determined excluding and
including the initial conditions. In the latter case an attractor of
chaotic response and the capsize boundary of the fractal nature are
obtained.
Keywords: ship rolling, regular waves, chaotic capsizing, nonlinear equation of motion
- Type of paper
: Paper in journal
Title: Numerical Simulation of Ship Capsizing
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 3
Volume: 42
Year: 1993
Pages: from 214 to 220
Language: engleski
Summary: A new approach to the evoluation of ship stability in
regular and irregular waves based on the results of recent investigations
of nonlinear oscillations is described. An intact and a demaged ship,
exposed to external and parametric excitation, are considered. the general
roll equation is integrated in the time domain by the harmonic acceleration
method. The safe basin in both the initial value plane and the excitation
plane is analysed. Linearly increasing sea state is also taken into
account.
Keywords: ship stability, capsizing, ship rolling, regular waves, irregular waves
- Type of paper
: Paper in journal
Title: Nonlinear oscillations of quadratic dynamical system and
its application to mooring analysis
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: International Shipbuilding Progress
Number: 426
Volume: 41
Year: 1994
Pages: from 149 to 177
Language: engleski
Summary: Nonlinear oscillations of dynamical systems with a
quadratic restoring force, subjected to monoharmonic and polyharmonic
excitation are analysed by employing the harmonic balance method. The
method is improved in such a way that the system of nonlinear algebraic
equations is derived in an explicit form and solved directly in the
frequency domain. Two algorithms are given, i. e. the reccurent and
simultaneous one in the case of monoharmonic and polyharmonic excitation
respectively. Random oscillations are treated as a set of periodic
responses caused by the same spectral excitation with random phase angles.
The statistical analysis of responses gives insight into the degree of the
nonlinear random process nonstationarity.
The quadratic dynamical model is used to simulate the behaviour of
moored vessels. The response of a vessel subjected to the monoharmonic,
polyharmonic and random wave excitation of the first and second order and
their coupling is analysed by employing the numerical methods described
above.
Keywords: quadratic dynamical system, nonlinear oscillations, harmonic analysis, mooring analysis
- Type of paper
: Paper in journal
Title: Numerical Simulation of a Ship Capsizing in Irregular
Waves
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Journal: Chaos, Solitons & Fractals
Number: 5
Volume: 5
Year: 1995
Pages: from 727 to 737
Language: engleski
Summary: The capsize boundary in the initial value plane and
excitation plane for an intact and a damaged ship are determined. The
differential equation of rolling motion and slope spectrum of irregular
wave excitation are simplified. The time integration is performed by the
harmonic acceleration method. The influence of random phase angles of
irregular waves on fractal capsize boundary is explored.
Keywords: ship capsizing, irregular waves, numerical simulation
- Type of paper
: Paper in journal
Title: An Integral Procedure for Ship Vibration Prediction, Part
1- Vibration Analysis
- Authors:
- Grubišić, Rajko (74052)
- Bobanac, Nenad (147720)
- Senjanović, Ivo (57053)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 2
Volume: 42
Year: 1994
Pages: from 140 to 149
Language: engleski
Summary: An integral ship vibration prediction procedure, consisting
of vibration analysis during the design stage, is presented. For the
vibration analysis the finite element method was employed. By means of a
1D, 2D and 3D model, basic hull girder vibration, coupled
hull-superstructure vibration due to propeller excitation and vibration of
the system afterbody-main engine-superstructure due to engine excitation,
respectively, was investigated
Keywords: Ship vibration, vibration analysis, vibration excitation, finite element method
- Type of paper
: Paper in journal
Title: An Integral Procedure for Ship Vibration Prediction, Part
2 - Vibration Measurement
- Authors:
- Bobanac, Nenad (147720)
- Grubišić, Rajko (74052)
- Senjanović, Ivo (57053)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 3
Volume: 42
Year: 1994
Pages: from 221 to 231
Language: engleski
Summary: The vibration measuruments of a product carrier, consisting
of the excitation test and the ship trial measurumentswere compared with
1D, 2D and 3D FEM model calculation result given in (1). The correlation of
the measurument result from the excitation tests and the ship trial results
was done. Many valuable conclusions were made.
Keywords: Ship vibration, vibration measuruments, vibration excitation, finite element method
- Type of paper
: Paper in journal
Title: Vibration analysis of ship's hull with modal parameters
- Authors:
- Senjanović, Ivo (57053)
- Grubišić, Rajko (74052)
- Fan, Ying (162386)
Journal: Journal of Structural Engeneering
Number: 1
Volume: 21
Year: 1994
Pages: from 25 to 36
Language: engleski
Summary: A review of recent activities connected with the beam
theory and its aplication to higher mode ship's hull vibration is
presented. This includes the definition of modal stiffness parameters, i.e.
bending, shear, torsional and wraping moduli, based on the higher -order
theory of thinn-walled girders. Furthermore, the harmonic acceleration
method for linear and nonlinear transient vibration is elaborated. A
computer program for free and forced harmonic and transient vibration of
flexsural and torsional vibration of ship hull is described. Its
application is illustrated by some practical examples.
Keywords: Ship's hull, modal parameters, vibration analysis
- Type of paper
: Paper in journal
Title: Computer Aided Design (CAD) of curved girders for oil
storage tank dome roofs
- Authors:
- Parunov, Joško
- Kevo, Milko
Journal: Nafta
Number: 7-8
Volume: 44
Year: 1993
Pages: from 371 to 375
Language: engleski
Summary: The paper presents CAD methods which enable computation of
curved girders for oil storage dome roofs. Described are the Vianello
method, the approksimate method (DIN 4119, Bl. 2/1961), and the new method
based upon the direct solution of the boundary value problem.
Comparative analysis of numerical results shows that the new method is
simpler, more accurate and faster to execute on a computer than the
existing methods, and thet it has a larger area of application. computer
program algorithms have also been presented.
Keywords: CAD, oil storage tank, curved girders, dome roof
- Type of paper
: Paper in journal
Title: Ship Structures Analysis for CFroatian Shipyards
- Authors:
- Senjanović, Ivo (57053)
Journal: BRODOGRADNJA, Časopis brodogradnje i brodograđevne
industrije
Number: 4
Volume: 42
Year: 1994
Pages: from 303 to 310
Language: engleski
Summary: Some interesting investigations of ship motion and
structure behaviour performed at the Faculty of Mechanical Engineering and
Naval Architecture, University of Zagreb, for the Croatian shibuilding
industry are summarised. The importance of research and development for
design of sophisticated ships and new orders is pointed out.
Keywords: ship structures, ship motions, strenght, vibration
- Type of paper
: Paper in journal
Title: Descriptive sampling in structural safety
- Authors:
- Žiha, Kalman (55582)
Journal: Structural Safety
Number: 17
Year: 1995
Pages: from 33 to 41
Language: engleski
Summary: Structural system reliability is tackled by Monte-Carlo
integration using descriptive sampling. The descriptive sampling is applied
instead of the random sampling in the crude Monte-Carlo procedure as well
as in the importance sampling procedures. High variance reduction and
processing time improvement using descriptive sampling have been
encountered.
Keywords: Structural reliability, Probability of failure, Monte-Carlo integration, Simulation, Importance sampling, Descriptive sampling, Latin hypercube
- Type of paper
: Paper in proceedings
Title: Numerical Modelling of Contemporary Ship Structures
- Authors:
- Čorić, Većeslav (77520)
Proceedings title: ITI'92 - INFORMATION TECHNOLOGY INTERFACES
Language: engleski
Place: Pula
Year: 1992
ISBN/ISSN: 1330 - 1011
Pages: from 363 to 370
Meeting: 14th International Conference "INFORMATION TECHNOLOGY INTERFACES" ITI'92
Held: from 09/14/92 to 09/18/92
Summary: A design procedure of contemporary ship structure is
impossiblewithout effective software support. The most time consuming
partof the ship design is structural analysis which gives the basefor
approval of the ship by classification societies or someother authorities.
Very complex numerical models have beendeveloped to take into consideration
all natural phenomenonpresent in the model describing the ship sailing in
sea waves.The paper presents a state-of-the-art rewiew of the
methodologiesand software support in this area. An illustrative exapmle
isdescribed.
Keywords: contemporary ship structure, structure - fluid interaction, finite element method, modelling
- Type of paper
: Paper in proceedings
Title: Time Domain Simulation of Non-linear Stochastic Model - Is
it Right Way?
- Authors:
- Čorić, Većeslav (77520)
Proceedings title: ITI'93 - "INFORMATION TECHNOLOGY INTERFACES"
Language: engleski
Place: Pula
Year: 1993
ISBN/ISSN: 1330-1012
Pages: from 365 to 372
Meeting: 15th International Conference "INFORMATION TECHNOLOGY INTERFACES"
Held: from 06/15/93 to 06/18/03
Summary: The method of time domain simulation in marine structure
responseanalysis on sea waves is frequently used. This is a common toolwhen
the response statistics are estimated of the non-linear 2nd
order motions of a moored vessel in random sea. The moored marinestructure
in that case is modelled as a 2nd order dynamic systemsubjected to a
stationary Gaussian sea and the random seastate is
represented as a sum of harmonic components with random phases. Some
investigations found such methods to be incorrect. Thealternative method is
the spectrum analysis which is the Fourieranalysis of the stochastic
process. But when the model isnon-linear, statistical linearisation or the
higher momentspectrum must be introduced to show the characterstics
ofnon-linear process.
Keywords: marine structure, time domain simulation, spectral analysis method, stochastic models, non-linear characteristics
- Type of paper
: Paper in proceedings
Title: Motion Response of a Moored Offshore Structure in Sea
Waves
- Authors:
- Čorić, Većeslav (77520)
Proceedings title: X. SIMPOZIJ TEORIJA I PRAKSA BRODOGRADNJE
Language: hrvatski
Pages: from 0 to 0
Meeting: X. SIMPOZIJ TEORIJA I PRAKSA BRODOGRADNJE
Held: from 10/22/92 to 10/24/92
Summary: Description of non-linaer differential equation of
unsymmetric oscillatory swaying motion of moored offshore structure in
waves.The model with quadratic restoring force and stochasticexcitation.
Solution by Volterra's integral transformation.
Keywords: marine moored structure, stochastic model, non-linear characteristics, Volterra's integral transformations
- Type of paper
: Paper in proceedings
Title: A Classification of Two-dimensional Boundary Value
Problems
- Authors:
- Kalinovčić, Hrvoje (181804)
Proceedings title: X. SIMPOZIJ TEORIJA I PRAKSA BRODOGRADNJE
Language: hrvatski
Pages: from 0 to 0
Meeting: X. SIMPOZIJ TEORIJA I PRAKSA BRODOGRADNJE
Held: from 10/22/92 to 10/24/92
Summary: The report deals with a classification of
two-dimensionalboundary-value problems for the purpose of planing and
developinga new ship hydrodynamic subroutine package.
Keywords: naval hydrodynamic, boundary-value problem, problem classification, subroutine package
- Type of paper
: Paper in proceedings
Title: Ship structure Loading Caused by nderwater Explosion
- Authors:
- Smiljanić, Branimir (181784)
- Đuračić, Željko
Language: hrvatski
Year: 1992
Pages: from 0 to 0
Meeting: X. SIMPOZIJ TEORIJA I PRAKSA BRODOGRADNJE
Held: from 10/22/92 to 10/24/92
Summary: The sequence of events in an underwater explosion
ispresented and the effects of the shock wave on a submergedconstruction
are described. The results of our first measurementof underwater explosion
parameters and the analysis of theresults are given. Also, some problems
and the experience gainedduring the experiment are discussed.
Keywords: ship's hull, underwater explosion, strngth analysis, test measurement
- Type of paper
: Paper in proceedings
Title: Nonlinear Deterministic and Random Oscillations of Cubic
Dynamical Systems
- Authors:
- Senjanović, Ivo (57053)
- Francescutto, Alberto
- Editors
- Moan,
Proceedings title: Structural Dynamics - EURODYN'93
Language: engleski
Place: Rotterdam, Holand
Year: 1993
ISBN/ISSN: 90 5410 336 1
Pages: from 681 to 688
Meeting: EURODYN'93
Held: from 06/21/93 to 06/23/93
Summary: The exact solution of the differential equation of
motion ofa single degree of freedom system with cubic forces in the formof
a combination of different displacement, velocity andacceleration exposed
to a periodic excitation, is determineddirectly in the frequency domain.
For this purpose, thewell-known harmonic balance method is improved. A
system ofnon-linear algebraic equations is derived in an explicit form
andsolved by a recurrent and simultaneous procedure for the case
ofmonoharmonic and polyharmonic excitation respectively. Inaddition, the
latter procedure is employed to analyse the randomoscillations caused by a
periodic excitation with different phaseangles. Some non-linear effects are
illustrated within numericalexamples, as for instance jumping phenomenon
and nonstationarityof deterministic and random response.
Keywords: single degree of freedom system, nonlinear oscillations, monoharmonic oscillations, random excitation, harmonic balance method
- Type of paper
: Paper in proceedings
Title: Ship Screw Propeller Cavitation Recording with Angle
Sampling Control
- Authors:
- Bobanac, Nenad (147720)
- Vičić, Darko
Proceedings title: 35th International Symposium ELMAR'93
Language: engleski
Year: 1993
Pages: from 226 to 269
Meeting: 35th International Symposium ELMAR
Summary: A method of magnetic, video and photo recording of ship
screwpropeller cavitation is presented. A device developed forgenerating a
set of triggering signals following the angleposition of a rotating
propeller is described. The method isemployed for postdetectional A/D
conversion synchronised with therotational speed and angle position of the
rotating propeller,for the complete restoration of pressure pulse signals
induced bya cavitating propeller revolution by revolution, and for
thecorrelation between video records and hull pressure pulserecords.
- Type of paper
: Paper in proceedings
Title: Reliability-Based Design Procedure of Stiffened Cylinder
Using Multiple Criteria Optimisation Techniques
- Authors:
- Das, P.K.
- Faulkner, D.
- Žanić, Vedran (77913)
Proceedings title: Offshore Technology Conference
Language: engleski
Place: Houston, USA
Year: 1993
Pages: from 297 to 311
Meeting: Offshore Technology Conference
Held: from 05/02/93 to 05/07/93
Summary: A recently calibrated strength formulation under combined
loadingwhich minimises the model uncertainty factor is applied in the
optimisation study of a corner column of a TLP structure. The
various limit states for the orthogonal stiffened cylidricalshell are used
and they include bay instability, frame bending,frame tripping and minimum
requirements for area and rigidity ofring frames. Multiple attribute
decision making technique basedon adaptive generation of nondominated
designs is used to achievebetter, well balanced designs compared to the
original ones.
Design variables selected for the examples include shell
thickness, structural scantlings of stiffeners, number of
stringers, spacing of ring frames. Design attributes include
structural weight, structure cost, minimal reliability index for
various failure modes.
Keywords: Reliability, optimisation, stiffened cylinder, ultimate strength
- Type of paper
: Paper in proceedings
Title: Multiple criteria synthesis techniques applied to
reliability based design of SWATH ship structures
- Authors:
- Žanić, Vedran (77913)
- Das, P.K.
- Pu, Y.
- Faulkner, D.
- Editors
- Caldwell,
- Ward,
Proceedings title: Integrity of Offshore Structure EMAS Publications
Language: engleski
Place: Glasgov, Scotland, UK
Year: 1993
ISBN/ISSN: 0947817581
Pages: from 387 to 415
Meeting: Integrity of Offshore Structures
Held: from 06/17/93 to 06/18/93
Summary: A design method for concept level of structural design is
presented and applied to the design of transverse structure SWATHship. The
design method includes an analysis module and a
synthesis module. The analysis module contains: design load
definition procedure, response calculation via simplified FE
model, feasibility check via ultimate strength criteria,
reliability analysis, attribute value calculation blocks.Đ,
The synthesis module is based on adaptive generation of designsin the
feasible region. The concept of non-dominated points isused for filtering
efficient (Pareto) solutions which are thenused for an adaptive generation
of further nondominated designs.Selection among efficient solutions is
performed by the goalprogramming approach. Design variables selected for
the SWATHstructure design example are structural scantlings.
designattributes include:
structural mass, minimal safety factor achieved for various
failure modes, reliability bounds achieved.
Keywords: Reliability, optimisation, ship design, SWATH
- Type of paper
: Paper in proceedings
Title: Multiple Criteria Synthesis Technique Applied to the
Reliability Based Structural Design of Hull Components of a fast SWATH ship
- Authors:
- Das, P.K.
- Tolikas, C.
- Morandi, A.C.
- Žanić, Vedran (77913)
- Warren, N.F.
Proceedings title: Fast'93 Yokohama
Language: engleski
Place: Yokohama, Japan
Year: 1993
Pages: from 1 to 17
Meeting: FAST'93
Held: from 10/01/93 to 10/05/93
Summary: Paper presents component design of selected substructures
ofSWATH ship. Ultimate strength formulae are used in combinationwith
multiple criteria decision making system based on sequentialadaptive random
generation of nondominated (Pareto optimal)
designs. Substantial savings are reported.
Keywords: Reliability, optimisation, ship design, SWATH
- Type of paper
: Paper in proceedings
Title: Multiattribute Decision Making System Based on Random
Generation of Nondominated Solutions: an Application to Fishing Vessels
Design
- Authors:
- Žanić, Vedran (77913)
- Grubišić, Izvor (76234)
- Trincas, G.
Proceedings title: PRADS'92, Newcastle upon Tyne
Language: engleski
Place: Newcastle upon Tyne, GB
Year: 1992
ISBN/ISSN: 1-85166-863-2
Pages: from 1443 to 1460
Meeting: PRADS'92
Held: from 05/12/92 to 05/15/92
Summary: An improved methodology for decision making concept design
level
is presented. A multiatribute approach was preferred to
multiobjective one in the complex and conflicting decision
makingenvironment such as fishing vessel concept design. Each attributewas
defined through membership grade function based on fuzzy set
theory. The consistent relative significance of attributes is
obtained as an eigenvector of subjective decision making matrix
and used as weighting factor. Inadequate information about
configuration of feasible designs subspaces is overcome by randomgeneration
of design points in feasible region (Monte Carlo
method). The concept of nondominated points was used forfiltering efficient
(Pareto) solutions. Selection among efficientsolutions is performed by the
goal programming approach. Themathematical model of trawler was developed
based on analyticaland statistical formulations and was included as a
stand-alonemodule in the decision making system.
Keywords: Optimisation, ship design, fishing vessel, Monte Carlo method
- Type of paper
: Paper in proceedings
Title: Efficient Solution of the Multiattribute Design Problem
Applied to Fast Passenger Vessels
- Authors:
- Grubišić, Izvor (76234)
- Trincas, G.
- Žanić, Vedran (77913)
Proceedings title: II Symposium on High Speed Marine Vehicles
Language: engleski
Place: Naples, Italy
Year: 1993
Pages: from 322 to 336
Meeting: II Symposium on High Speed Marine Vehicles
Held: from 03/25/93 to 03/26/93
Summary: Design of fast passenger vessels means taking care of
manyconflicting requirements which influence both profitability forthe
operator and comfort for passengers. Solving these problemsleads to
multiattribute approach. Since some of the attributesare subject to
uncertainty by their nature, a fuzzy set approachis adopted for some
constraints and goals evaluation as well asfor solving the problem of
attribute normalization. All feasibledesigns, i.e. passing all constraints
control, are subject to aprocess of search for nondominated solutions
(Pareto-optimal)among which the final design will be selected by
subjectivedecision-making techniques. The mathematical model specializedfor
fast passenger vessels comprises the following elementsČ freevariables and
parameters definition, operating scenarioselection, hull form description,
hydrostatics, freeboard andstability control, weight and center of gravity,
resistance andpowering, seakeeping criteria,cost and
economyevaluation,volumes, areas and linear dimensions utilizationinclusive
of hull subdivision and evaluation of constraints andgoals. Procedures for
these calculations were tuned to conceptlevel design and a good portion of
those had to be developed fromscratch. Usage of the procedure is
demonstrated on a inter-islandpassenger ferry.
Keywords: multiattribute design, fast vessels, passenger vessels, mathematical model, Pareto optimum, nondominated designs
- Type of paper
: Paper in proceedings
Title: An Interactive Support System for Optimizing Design
Selection of Stern Trawlers
- Authors:
- Trincas, G.
- Žanić, Vedran (77913)
- Grubišić, Izvor (76234)
Proceedings title: Technics and Technology in Fishing Vessels
Language: engleski
Place: Ancona, Italy
Year: 1991
Pages: from 17 to 33
Meeting: 3-rd Symposium on Technics and Technology in Fishing Vessels
Held: from 05/24/91 to 05/24/91
Summary: An improved methodology for CAD process at the concept
designstage of fishing vessels design using multicriterialdecision-making
techniques is presented. The goal of providingthe the achievment of more
efficient fishing vessels is supportedby an user-friendly procedure based
on a synthesis module thatinvolves an identification of design criteria,
design attributes(goals), and design constraints, in terms of design
variables.This module includes three techniques of
decision-making:construction of value function, lexicographical
optimization andgoal seeking approach. A trawler design model was developed
andchecked for consistency by determining two stern trawlers whosedesign
goals differ in endurance range and propulsion plantpower, while the other
design requirements ramain unchanged. Thefollowing goals are identified in
the decision-making procedure:pull at given trawling speed, free running
speed, available fishhold volume, weight of a fuel for a fishing trip,
light shipweight. The code has been structured so as to simplify
theselection among a set of nondominated design alternatives fordifferent
requirements according to designer's subjectivedecision-making, thus
providing a consistent technical basis forpreliminary design.
Keywords: multicriterial decision-making, optimization, fishing vessel, trawler, concept design, mathematical modeling
- Type of paper
: Paper in proceedings
Title: The Mathematical Model of Ship Structures Safety
- Authors:
- Uršić, Josip (57121)
Proceedings title: 37. Međunarodni skup KOREMA
Language: hrvatski
Place: Zagreb
Year: 1992
ISBN/ISSN: 86-81571-11-7
Pages: from 194 to 197
Meeting: 37. Međunarodni skup KOREMA
Held: from 04/26/92 to 04/29/92
Summary: The Project has three main parts : the determination of
loading,the calculation of response of the structure and evalution of
itssafety. In the first part the determination of wave loading onships and
offshore structure by the methods of theoretical andexperimental
hydromechanics and mathematical statistics isdescribed. The corresponding
algorithms and programmes forpractical calculations on electronic computers
are developed.
In the second part the calculation of stresses and vibrations ofship's
structures, based on finite element method, isinvestigated. The original
programmes for analyses, optimisationand design are worked out. In the
domain of vibration theoriginal method for calculation of ship's hull
natural frequencesof higer modes, based on the theory of thin walled
structures isdeveloped.
Calculation methods of excitation forces, induced by the ship'spropeller
and caused underwater explosion, are investigated.
In the third part the criteria of loading capacity of ship'sstructures for
various modes of failure (ultimate strength,buckling, fatigue) are
determinated. The safety of structures isevaluted by statistical methods,
on the basis of the safety indexand of the partial safety factories.
Keywords: mathematical model, ship's structures, safety of structures
- Type of paper
: Paper in proceedings
Title: Application of Monte-Carlo Simulation in Engineering
Design and Structural Analysis
- Authors:
- Žanić, Vedran (77913)
- Žiha, Kalman (55582)
Proceedings title: X Simpozij Teorija i praksa brodogradnje
Language: engleski
Place: Rijeka
Year: 1992
Pages: from 0 to 0
Meeting: X. SIMPOZIJ TEORIJA I PRAKSA BRODOGRADNJE
Summary: Multicriterial decision making in engineering design is
considered using Monte Carlo simulation and dominancestructure. Structural
system reliability is tackled by MonteCarlo integration using importance
sampling techniques instandard normal space. Multicriterial optimization
methods areapplied to identify the sampling area.
Keywords: Multicriterial decision making, nondominated structure, optimisation, importance sampling, engineering, reliability, probability of failure, Monte-Carlo simulation
- Type of paper
: Paper in proceedings
Title: Multicriterial optimisation of 150000 tdw Suezmax tanker
- Authors:
- Belamarić, Igor
- Žiha, Kalman (55582)
- Čudina, Predrag
Proceedings title: X Simpozijum Teorija i praksa brodogradnje
Language: hrvatski
Place: Rijeka
Year: 1992
Pages: from 0 to 0
Meeting: X. SIMPOZIJ TEORIJA I PRAKSA BRODOGRADNJE
Summary: The paper considers optimization of Suezmax tanker of
150000 tdwusing two criteria: minimal mass, i.e. displacement and
minimal resistence. Single and multi -criterial methods are
applied on tanker mathematical model. From commercial point of
view, adventage is on the side of shorter ships with smaller
displacement but slightly higher resistence.
Keywords: Optimisation, design, tanker
- Type of paper
: Paper in proceedings
Title: Descriptive sampling in probability integration
- Authors:
- Žiha, Kalman (55582)
Proceedings title: ITI'93 Proceedings
Language: engleski
Place: Pula
Year: 1993
ISBN/ISSN: 1330-1012
Pages: from 327 to 333
Meeting: 14th International Conference "INFORMATION TECHNOLOGY INTERFACES" ITI'92
Summary: Multidimensional probability integration within multiple
complex domain is tackled by Monte Carlo integration using
descriptivr sampling. The descriptive sampling is applied in
uniform (0,1) random variable space. Input sample size assesment
is considered. Numerical tests given in the paper do confirm
benefits of descriptive samling application.
Keywords: Probability, simulation, descriptive sampling
- Type of paper
: Paper in proceedings
Title: Transition from regular to chaotic oscillations of cubic
dynamical system
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
- Parunov, Joško
Proceedings title: Prvi kongres Hrvatskog društva za mehaniku
Language: engleski
Place: Pula
Year: 1994
Meeting: Prvi kongres Hrvatskog društva za mehaniku
Held: from 09/08/94 to 09/11/94
Summary: The improved harmonic balance method and the harmonic
acceleration method for solution of differential equation of motion of
cubic dynamical systems in the frequency and time domain are described.
Since the former method is almost exact and the latter approximate, in
order to evaluate reliability of the latter method a correlation analysis
is performed. Response of a cubic system in the symetry breaking region, as
the first step in the transition to chaos, where the both methods are
operable, is determined. The harmonic acceleration method is found to be a
sophisticated tool for the time integration.
Keywords: cubic dynamical system, regular oscillations, chaotic oscillations
- Type of paper
: Paper in proceedings
Title: Deterministic and random chaotic oscillations
- Authors:
- Senjanović, Ivo (57053)
- Fan, Ying (162386)
Proceedings title: Vibration and Noice '95
Language: engleski
Place: Venice, Italy
Year: 1995
Pages: from 483
Meeting: Vibration and Noice '95
Summary: The definition of chaos as a multiharmonic response of a
nonlinear dynamic system subjected to monoharmonic excitation is extended
to random oscillations. Depending on the nonlinearity, a narow band
excitation may cause a wide band response spectrum. This is illustrated in
the case of rolling motion of an intact and a damaged ship exposed to
regular and irregular wave excitation. The influence of random phase angles
in spectral excitation on the stationarity of response spectrum is
analysed.
Keywords: cubic dynamical system, chaotic oscilations, deterministic oscilations, random oscilations
- Type of paper
: Paper in proceedings
Title: Bending moment of ship hull girder caused by pulsating
bubble of underwater explosion
- Authors:
- Senjanović, Ivo (57053)
- Bobanac, Nenad (147720)
- Smiljanić, Branimir (181784)
- Editors
- ., . (177611)
- Faltinsen, O.
- Larsen, C.M.
- Moan,
Proceedings title: Hydroelasticity in Marine Technology
Language: engleski
Place: Rotterdam, Holand
Year: 1994
ISBN/ISSN: 9054103876
Pages: from 149 to 156
Meeting: Hydroelastisity in Marine Technology
Held: from 05/25/94 to 05/27/94
Summary: the theory of interaction of underwater explosion gas
bubble with a nearby ship hull structure is outlined. the excitation due to
bubble pulsation is determined for two types of explosive on the basis of
bubble pulsation theory, using the pulsation period measurument results.
the numerically obtained dependence of the maximum bending moment on the
mass and depth of explosive for different ship hull is discussed.
Keywords: ship's hull, bending moment, pulsating bubble, underwater explosion
- Type of paper
: Paper in proceedings
Title: Static analysis of catenary in mooring system
- Authors:
- Senjanović, Ivo (57053)
- Mravak, Zoran
Proceedings title: Zbornik radova FSB XVIII
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 1330-4364
Pages: from 139 to 151
Summary: Prikazano je analitičko rješenje za tjemenu, položenu i
podignutu odnosno ovješenu lančanicu bez utega i s utegom. Razrađena je
metoda konačnih elemenata. Primjena analitičkih postupaka ilustrirana je
jednostavnim primjerima uz ocjenu njihove točnosti.
Keywords: mooring system, catenary, statical analysis
- Type of paper
: Paper in proceedings
Title: Modelling of ship structures in vibration analysis
- Authors:
- Grubišić, Rajko (74052)
- Senjanović, Ivo (57053)
- Donkov, Ivica
- Editors
- Andročec, Vladimir
- Lovrić, Josip
Proceedings title: IMAM '95
Language: engleski
Place: Dubrovnik
Year: 1995
Pages: from 854 to 862
Meeting: VII Congress, IMAM
Held: from 04/23/95 to 04/27/95
Summary: Vibration analysis may be successfully performed by the
finite element method using 2D and 3D models of complete ship structure.
Since such an analsys is very time comsuming, it is used only for final
analyses. In early design stage, when the global ship response is
considered, the complete ship hull may be represented by 1D model. However,
its classical application is limited to lower natural modes. In order to
cover needs of propeller excited forced vibration and to increase the
accuracy of beam model, vibration properties, such as hull stiffness, added
mass and damping, are specified as modal quantities.
Keywords: ship structure, modelling, vibration analysis
- Type of paper
: Paper in proceedings
Title: Numerical Model of Journal bearing
- Authors:
- Parunov, Joško
Proceedings title: Zbornik radova FSB XVIII
Language: hrvatski
Place: Zagreb
Year: 1994
Pages: from 153 to 159
Summary: Reynolds differential equation describing stationary
hydrodynamic lubrication in journal bearing is solved by the finite-element
method.A weak formulation and expressions for calculating element
"fluidity" matrix and "load" vector are derived. Calculated expressions for
a linear triangular element are given. Numerical results are in good
agreement with analytical solution for the case of "infinitely" short
bearing.
- Type of paper
: Paper in proceedings
Title: Dynamic analysis of vertical pressure vessels
- Authors:
- Parunov, Joško
Proceedings title: Energetska i procesna postrojenja
Language: hrvatski
Place: Dubrovnik
Year: 1994
Meeting: Energetska i procesna postrojenja, Dubrovnik
Summary: Dynamical analysis is required in designing high steel
towers, chimnexs and vertical pressure vessels in oil processing industry.
The paper presents a method of analysis of tower response to earthquake.
The problem has been solved by a modal superposition with the aplication of
a harmonic acceleration method.
- Type of paper
: Paper in proceedings
Title: The Relation of Descriptive Sampling to the Latin
Hypercube Method
- Authors:
- Žiha, Kalman (55582)
- Editors
- Kalpić, Damir
- Hljuz Dobrić, Vesna
Proceedings title: ITI'95
Language: engleski
Place: Zagreb
Year: 1995
ISBN/ISSN: 1330-1012
Pages: from 281 to 286
Meeting: 17th International Conference on INFORMATION TECHNOLOGY INTERFACES
Held: from 06/13/95 to 06/16/95
Summary: The Monte-Carlo integration method denoted as descriptive
sampling, has been presented originally in a heuristic manner. The variance
reduction and time improvement using descriptive sampling reported
elsewhere, have not been explained. The paper brings into the relation both
descriptive sampling and Latin hypercube approach, giving a sense of
background for better understanding of the descriptive sampling method.
Keywords: Monte-Carlo integration, Simulation, Importance sampling, Descriptive samping, Latin hypercube
- Type of paper
: Paper in proceedings
Title: Solution of Hydrodynamic Reaction by the Finite Element
Method Application
- Authors:
- Ljulj, Andrija
Proceedings title: Sorta'94 XI simpozij Teorija i praksa brodogradnje
Language: hrvatski
Place: Dubrovnik
Year: 1994
Meeting: SORTA'95 XI simpozij Teorija i praksa brodogradnje
- Type of paper
: Paper in proceedings
Title: Discrete Numerical Model in Seakiping Analysis of Twin
Hull
- Authors:
- Čorić, Većeslav (77520)
- Ljulj, Andrija
- Mravak, Zoran
- Editors
- Andročec, Vladimir
Proceedings title: Proc. of the VII Cong. of the Int. Maritime Association of the Mediterranean
Language: engleski
Place: Dubrovnik
Year: 1995
ISBN/ISSN: 953-6017-02-4
Pages: from 56 to 65
Meeting: VII Congress, IMAM
Held: from 04/23/95 to 04/27/95
Summary: A great interest about catamarans in recent years
emphasized attention on investigations of the hydrodynamic
characteristics.A very complex interaction between two cylinders which
oscillate togather in waves results for some frequencies in peculiar
hydrodynamic reaction forces, e.i. hydrodynamic coefficients - added mass
and damping coefficients. The method applied in this work to compute the
hydrodynamic forces on multiple cylinders is based on discrete models.
These methods, although very general with respect to topological form of
the problem are not so common in ship hydrodynamic praxis. The main reason
is the size of the model which includes besides the wetted surface also a
part of fluid domain and its bound what results in a larger system of
linear equations. On the other side by means of these methods - the finite
element method and combined source and bipod methods, the problem may be
modelled more accurate.
Keywords: numerical method, seakeeping analysis, hydrodynamic coefficient, twin hull
- Type of paper
: Paper in proceedings
Title: Multi Criteria Concept Design Model of Fast Catamaran
- Authors:
- Grubišić, Izvor (76234)
- Editors
- Andročec, Vladimir
Proceedings title: Proceedings of the IMAM'95
Language: engleski
Place: Dubrovnik
Year: 1995
Pages: from 685 to 700
Meeting: VII Congress, IMAM
Held: from 04/24/95 to 04/28/95
Summary: Mathematical design model of the fast catamaran is
presented. The model is intended to be included in the multi criteria
decision making design shell at the level of concept design. Empirical and
analytical methods for predicting vessel;s properties are developed as a
set of sub-tasks treating problems of hull form, hydrostatics, resistance,
powering, seakeeping, space utilization, cost estimating, economy
prediction etc. Design constraints of different types are included. A
method for solving the equality constraint has been devised. Attributes
needed for the multicriteria decision making are evaluated. Definition of
the aspiration levels and normalization are based on fuzzy set theory. Less
known procedures specialy developed for the catamaran design model are
described in more detail.
Keywords: concept design, design model, catamaran, multi criteria
- Type of paper
: Paper in proceedings
Title: Analysis and optimization of the transport in workshop by
the analytical method
- Authors:
- Grubišić, Izvor (76234)
- Mavrić, Ivan
- Editors
- Andročec, Vladimir
Proceedings title: Transactions of the IMAM'95
Language: engleski
Place: Dubrovnik
Year: 1995
Pages: from 768/7 to 777
Meeting: VII Congress, IMAM
Held: from 04/24/95 to 04/28/95
Summary: The paper presents the analytical method for determining
optimal number of cranes in a workshop of the shipyard. This method is
based on the theory of mass servicing. A short description of basic
concept, priciples and limitations of this theory is given. The adequate
mathematical model is created in the concrete examples of the mass
servicing system (MSS). On the basis of this mathematical model, the
quantitative characteristics for all variants of MSS are defined and
analyzed. Finaly the most important quantitative characteristics, basic
parameters of the optimization goals and optimal solution for analyzed
variants are presented and discussed.
Keywords: transport, optimization, analytical method
- Type of paper
: Paper in proceedings
Title: Concept Design Model of Fishing Catamaran / A Multi
Criteria Approach
- Authors:
- Grubišić, Izvor (76234)
- Trincas, G.
- Editors
- Messina, Gaetano
Proceedings title: Proceedings of th 5'th congress 'Technics and technology in fishing vessels'
Language: engleski
Place: Ancona, Italy
Year: 1995
Meeting: 5'th Symposium on Technics and Technology in Fishing Vessels
Held: from 05/24/95 to 05/25/95
Summary: A proposal for the concept design model of the catamaran
fishing vessel is presented. The model is suitable for the multi criteria
decision making approach similar to the one previously applied to monohull
trawlwer design. The model is aimed at the fast displacement hull forms.
The general idea is to increase speed of the Adriatic/type fishing vessel
from the present 9-11 knots range to the 12-20 knots range and to analyze
the feasibility of the vessel. In order to predict the principal
particulars of the catamaran fishing vessel, approximate empirical and
analytical methods were adapted based on the very limited data base of
existing vessels. The initial version was applied to the task of designing
20 m fishing catamaran.
Keywords: fishing vessel, design model, catamaran, multicriterial approach
- Type of paper
: Paper in proceedings
Title: Feasibility Study on a High-Speed Catamaran: Comparison
with Aquastrada
- Authors:
- Trincas, G.
- Biriaco,
- Grubišić, Izvor (76234)
- Ponomarev,
Proceedings title: ICCAS'95
Language: engleski
Place: Travemunde, Germany
Year: 1995
Meeting: ICCAS'95
Held: from 09/26/95 to 09/30/95
Summary: Paper deals with the concept development and feasibility
study of a large catamaran designed for the fast sea transport of
passengers and vehicles in the medium-range Mediterranean routes, intended
to be more profitable than present fast monohulls. The concept design was
carried out by means of a multiattribute decision-making procedure to
generate and select the 'best possible solution'. Two variants of the
selected design were then submitted to feasibility study, assuming that the
machinery will either be ofthe gas-turbine type for the faster solution or
of the diesel type for the slower alternative suitable to carry trucks also
in the off-season. An economic trade-off study was accomplished to compare
the investment worth of the projected catamaran with the Aquastrada fast
monohull.
Keywords: High-speed Catamaran, Feasibility study
- Type of paper
: Paper in proceedings
Title: Comprehensive concept design of fast RO-RO ships by
multiattribute decision-making
- Authors:
- Žanić, Vedran (77913)
- Trincas, G.
- Grubišić, Izvor (76234)
- Editors
- Erichsen, S.
- Gallin, C.
- Lehmann, E.
- Leissner, D.
- Punt, J.
Proceedings title: Proceedings of 5th IMDC
Language: engleski
Place: Delft, The Netherlands
Year: 1994
Pages: from 403 to 418
Meeting: 5th International Marine Design Conference
Held: from 05/24/94 to 05/27/94
Summary: The mathematical model of fast RO-RO ship is structured
to describe main design aspects. Preliminary analysis of hull forms within
predicted size and speed limits, provides initial design guidance. Deck
area utilization for loading/unloading of trailers is modelled. Intact and
damaged stability are accounted for. Added resistance and other dynamic
effects are taken from systematic seakeeping calculations. Power prediction
is tuned on regression analysis of experimental data. Structural design
study provides insight into weight breakdown and into location of center of
gravity.
Analysis of potential traffic flow in Mediterranean area serves as a
basis for ship specifications. Data of port and shipyard facilities are
addresed as constraints. Although emphasis is on technical design rather
than economics, the set of feasible and efficient non-dominated ship
designs provides a basis for technical decision related to the resultant
economic consequences.
Keywords: optimisation,naval architecture,ro-ro ships,decision making,concept design
- Type of paper
: Paper in proceedings
Title: Applied design - strength limit states formulations
- Authors:
- Rigo, P.H.
- Frieze, Paul
- Ganapathy, C.
- Hori, T.
- Mansour, A.E.
- Moan, T.
- Permantier, Guy
- Frieze, Paul
- Žanić, Vedran (77913)
- Moan, T.,at al
- Editors
- Kendrick, A.M.
- Jeffrey, N.E.
Proceedings title: Proceedings of the 12th international Ship and offshore structures congress
Language: engleski
Place: St'John's, Canada
Year: 1994
Pages: from 1 to 58
Meeting: Ship and Offshore Structures Congres
Held: from 09/12/94 to 09/16/94
Summary: The report analyses applicability of formulations related
to the ultimate buckling and the fatigue strength of structural components
of ship,offshore platform,and other marine structures.Emphasis is given to
comparisons with available experimental data compiled in terms of
probabilistic measures to evaluate the accuracy of these formulations for
use in reliability-based design procedure.
Keywords: ship structures,ultimate strength,design,structural reliability
Other: Rad je izvjestaj komiteta V.1 APPLIED DESIGN
- Type of paper
: M.A.
Title: Seakeeping Analysis of Slender Multihulls
Faculty: Fakultet strojarstva i brodogradnje Zagreb
Date of defense: 09/20/95
Language: hrvatski
Number of pages: 195
Summary: Da bi se uspješno riješio problem čvrstoće dvotrupaca
potrebno je odrediti pored statičkog i valno opterećenje. Pored toga je
potrebno izvršiti proračun njihanja na pravilnim harmonijskim valovima.
Njihanje broda je objašnjeno modelom radijacije i difrakcije. Rješenjem
prvog dijela dobijamo dodatnu masu i hidrodinamičko prigušenje, a rješenjem
drugog dijela dobijamo uzbudnu silu na tijelo. Za beskonačno dugi cilindar
to je dvodimenzionalni problem opisan Laplaceovom diferencijalnom
jednadžbom i pripadnim rubnim uvjetima. Problem je riješen metodom konačnih
elemenata.
Keywords: seakeeping analysis of multihulls, finite element method, hydrodynamic coefficients
- Type of paper
: Mentorship
Title: Seakeeping Analysis of Slender Multihulls
Faculty: Fakultet strojarstva i brodogradnje Zagreb
Mentor: ČORIĆ VEĆESLAV
Date of defense: 09/20/95
Number of pages: 195
Author: Ljulj dipl. inž. brodogradnje Andrija
Degree level: M.A.
- Type of paper
: Mentorship
Title: Motion Analysis of the Ship in Harmonic Wave
Faculty: Tehnički fakultet Rijeka
Mentor: ČORIĆ VEĆESLAV
Date of defense: 05/03/95
Number of pages: 132
Author: Prpić-Oršić dipl. inž. brodogradnje Jasna
Degree level: M.A.
- Type of paper
: Computer program
Title: CONMAP - Calculation of hydrodynamic coefficients of
oscillatory section by the method of conformal maping and
multipole expansion
- Authors:
- Kalinovčić, Hrvoje (181804)
Institution depot: .
HW platform: PC
Operating system: MS-DOS
Programming language: FORTRAN
Year: 1992
Summary: Modulus for calculating hydrodynamic coefficients of
mono-hull transversal section in oscillatory motion on harmonic wave.
Method:
- conformal mapin of symmetric transversal section in complexplane,
- analytical solution of potential flow by the method ofmultipole expansion
(Ursell)
Hydrodynamic modulus of computer program GIOP1 for the se-keepinganalysis
of contemporary ship structures.
Keywords: hydrodynamic coefficients, conformal maping method and method of multipole expansion
- Type of paper
: Computer program
Title: LFEM -
- Authors:
- Čorić, Većeslav (77520)
HW platform: PC
Operating system: MS-DOS
Programming language: FORTRAN
Year: 1993
- Type of paper
: Computer program
Title: SNG2 - Calculation of hydrodynamic coefficients of
oscillatory section by a combined source and dipole method
- Authors:
- Čorić, Većeslav (77520)
- Ljulj, Andrija
Odering party: .
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: PC
Operating system: MS-DOS
Programming language: FORTRAN
Year: 1993
- Type of paper
: Computer program
Title: DYANA - Ship's Hull Vibration
- Authors:
- Čorić, Većeslav (77520)
- Fan, Ying (162386)
- Agustinović, Tomo
- Senjanović, Ivo (57053)
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX 8530
Operating system: VMS
Programming language: FORTRAN 77
Year: 1993
Summary: Program makes the following calculations possible:
- determination of added mass of surrounding water.
- free vertical, horizontal and torsional vibration for the first10 modes
by the determinant
reach method.
- harmonic forced vibration out of resonance ignoring damping, bythe direct
integration
method.
- harmonic forced vibration at / out of resonance includingdamping by the
mode
superposition method.
- transient vibration by the harmonic acceleration method withinthe mode
superposition
approach.
Keywords: ship's hull, added mass, free vibration, harmonic vibration, transient vibration, beam finite element, harmonic acceleration method
- Type of paper
: Computer program
Title: STIFF - Ship's Hull Stiffness
- Authors:
- Fan, Ying (162386)
- Senjanović, Ivo (57053)
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX 8530
Operating system: VMS
Programming language: FORTRAN 77
Year: 1993
Summary: Program has been developed for the calculation of
thin-walledgirder stiffness parameters as well as stress and
deformationflows. It treats girders of symmetrical open, close and
combinedmulticell cross-sections. Thus, bending, shear, torsion andwarping
module may be determined, as well as normal and shearstress flow over the
cross-section depending on the sinusoidalmode number. The influence of
transversal bulkheads is also takeninto account.
Keywords: thin-walled girder, open cross-section, close cross-section, multicells cross-section, bending stiffness, shear stiffness, torsional stiffness, warping stiffness, normal stress flow, shear stres flow
- Type of paper
: Computer program
Title: PROPEX - Program for Propeller Excitation Calculation
- Authors:
- Grubišić, Rajko (74052)
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX 8530
Operating system: VMS
Programming language: FORTRAN 77
Year: 1993
Summary: The programming system PROPEX is developed to carry out
theevaluation analysis of a hull form and propeller design from
thepropeller-hull interaction and excitation aspect. The main ideawas to
build up such a computational system, which well enablethe user a quick and
logical connection between input design dataand output evaluation results.
Therefore PROPEX is built in a wayto carry out two parallel operations,
i.e. to present results inan usual numerical form and obtained evaluation
results in agraphical form. All source programs are written in
standardFORTRAN 77 symbolic language and the operational system UNIX
isused.
Keywords: vibration, propeller excitation
- Type of paper
: Computer program
Title: LOADS - program for stohastic combination of time variant
loads
- Authors:
- Žiha, Kalman (55582)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX, RISC, PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1991
Summary: The program calculates the stohastic combination of time
variantloads. Still water and wave loads of ship structures areconsidered
as well as their combined action. Output used byRFIELD programs.
Keywords: Loads, ship structure
- Type of paper
: Computer program
Title: RFIELD/TORO / program for calculation of response fields
in cross section of complex structure using extended beam theory
- Authors:
- Žanić, Vedran (77913)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1991
Summary: Using warping field as principal field of the FEM model,
primary and secondary shear-stress fields and corrected normal
stresses can be calculated for any configuration of open and
closed cells in a 2-D section of the structure. This program is
used for the calculation of: a) vertical and horizontal bending
response, b) torsional response (pure torsion and torsion with
restrained warping). Input program LOADS output program GEVAL.
Keywords: stresses, deformations, finite elements, ship structures
- Type of paper
: Computer program
Title: RFIELD2/OKVIR - program for calculation of responses using
beam idealisation of structures
- Authors:
- Jančijev, Tomislav (63750)
- Žanić, Vedran (77913)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1991
Summary: Program is developed for 2-D frame calculation for which
a suitable general beam element (with stiff ends and shear
correction) is used for modelling girders with brackets. Program
can generate static and dynamic pressures from sea or liquidcargo as wellas
inertial loadings due to ship motions. Inputprogram LOADS output program
GEVAL.
Keywords: Stresses, deformations, finite elements, ship structure, loads
- Type of paper
: Computer program
Title: RFIELD3 - program for calculation of response using
membrane idealisation of structure
- Authors:
- Jančijev, Tomislav (63750)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1991
Summary: Program is generating deformations and stresses using
special membrane elements. Program can calculate derivatives of
response field due to change of design variables. Input program
LOADS output program GEVAL.
Keywords: Stresses, deformations, finite elements, ship structure
- Type of paper
: Computer program
Title: GEVAL1 - program library of ultimate strength constraints
- Authors:
- Žanić, Vedran (77913)
- Naranča, Nikola
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1993
Summary: Ultimate strength theoretical model is used with 40
formula.Input RFIELD programs.
Keywords: Ultimate strength, program library
- Type of paper
: Computer program
Title: BUCKLING - program library with formulae for ultimate
strength for girders and stiffened panels
- Authors:
- Bošnjak, Maša
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,SPARK,RISC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1990
Summary: Program library with ultimate strength formulae for girders
andstiffened panels
Keywords: ultimate strength, girder, stiffened panel, program library
- Type of paper
: Computer program
Title: PLASTOK - program for calculation of collapse capability
of structures
- Authors:
- Jančijev, Tomislav (63750)
- Žanić, Vedran (77913)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,SPARC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1991
Summary: Program calculates the structural cost and weight as well
as thecolapse capability of structure. Incremental plastic frameanalysis is
used. Output is used in program CRITER.
Keywords: Frames, colapse capability
- Type of paper
: Computer program
Title: RELI - program support(shell) for reliability calculation
- Authors:
- Žiha, Kalman (55582)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,work-station,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1995
Summary: The programing support (shell) for semiprobabilistic first
ordersecond moment calculationa (FOSM) as well as for advancedprobabilistic
calculations (AFOSM).
Keywords: Reliability, probability of failure, structure
- Type of paper
: Computer program
Title: ZAGREL - program for othogonal transformations and
sensitivity analysis of dependent random variables
- Authors:
- Žiha, Kalman (55582)
- Žanić, Vedran (77913)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,UNIX,SPARC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1995
Summary: Program performs ortogonal transformations using spectral
decomposition and Cholecky decomposition of correlation matrices.
Sensitivity analysis is based on derivation of the transformation matrix
also included in the program.
Keywords: Correlation, decomposition, sensitivity, orthogonal transformation
- Type of paper
: Computer program
Title: MCS - progra support(shell) for Monte-Carlo simulation in
structural safety
- Authors:
- Žiha, Kalman (55582)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,work-stattion,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1994
Summary: Program support (shell) is provided for Monte Carlo
simulation instructural safety using different methods as crude Monte
Carlo,importance sampling, adaptive sampling and descriptive
sampling.Support for simulation experiments is provided also.
Keywords: Monte-Carlo, simulation, importance sampling, adaptive sampling, descriptive sampling, experiment, reliability, structure
- Type of paper
: Computer program
Title: PARRAN - shell for multicriterial design via adaptive
generation of nondominated designs in affine space
- Authors:
- Žanić, Vedran (77913)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,work-station
Operating system: VMS,UNIX
Programming language: FORTRAN
Year: 1994
Summary: The shell for multicriterila design determines the true
linearrange of variables, generates points in design space X andevaluates
the design feasibility via design model. Evaluation ofattribute functions
Y, and their transformation through themembership grade function is
performed. Program filtersnondominated designs among feasible solutions.
Keywords: Nondominated solutions, shell, optimisation, design
- Type of paper
: Computer program
Title: CHARIOT - shell for design selection in metric space
- Authors:
- Žanić, Vedran (77913)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,SPARC,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1994
Summary: Shell for multicriterial interactive design procedure based
onhypersurface of nondominated designs. Design selection isperformed using
weight factors obtained via Saaty's method andL1, L2 and Loo metrics to
determine "distance" betweennondominated designs and prescribed goal.
Calculation models areobtained from PARRAN shell.
Keywords: Design, fuzzy function, Saaty's method
- Type of paper
: Computer program
Title: STAT - program library for statistical and mathematical
algorithms for reliability calculations
- Authors:
- Žiha, Kalman (55582)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,work-stattion,PC
Operating system: VMS,UNIX,PC
Programming language: FORTRAN
Year: 1993
Summary: The program library contains all the statistical and
mathematicalalgorithms and functions necessary for reliability
calculationsin the form of subroutines.
Keywords: Algorithms, statistics, mathematics, reliability, library
- Type of paper
: Computer program
Title: ENUM - program support(shell) for multicriterial
optimisation by enumeration
- Authors:
- Žiha, Kalman (55582)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: VAX,RISC,work-station,PC
Operating system: VMS,UNIX,DOS
Programming language: FORTRAN
Year: 1991
Summary: Program support (shell) for single- and multi-criterial
optimisation using different metrics and weighted goals based on
simple enumeration procedure.
Keywords: Optimisation (multicriterial), enumeration
- Type of paper
: Computer program
Title: PORBAR - program for statical calculation of launching
from a barge
- Authors:
- Žiha, Kalman (55582)
Odering party: .
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: RISC
Operating system: UNIX
Programming language: FORTRAN
Year: 1993
Summary: Program performs hydrostatic calculations of
longitudinallaunching of displacement vessels from a barge.Relative
position of the vessel and the barge on the waterline isdetermined. The
balance between two floating vessels with two
degrees of freedom each in unrestricted environment is found. An
iterative algoritham for determination of balance considering
forces and moments is applied.
Keywords: Hidrostatics, longitudinal launching, barge
- Type of paper
: Computer program
Title: DINBAR - program for dynamical calculation of launching
from a barge
- Authors:
- Žiha, Kalman (55582)
Odering party: Brodograđevna Industrija Split
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: RISC
Operating system: UNIX
Programming language: FORTRAN
Year: 1993
Summary: Program performs the dinamic calculations of
longitudinallaunching of displacement vessels from a barge are presented.
Thesistem of two vessels freely floats in unrestricted environment.The
dynamic calculation is based on energy conservation, linearmomentum and
impulse conservation principles. An iterativealgorithm is applied for
solution of dynamical equotions,resulting in displacements, velocities and
accelerations of bothvessels.
Keywords: Dynamics, longitudinal launching, barge
- Type of paper
: Computer program
Title: FIDES - mathematical model of the fishing vessel
- Authors:
- Grubišić, Izvor (76234)
Odering party: Fakultet strojarstva i brodogradnje
HW platform: PC
Operating system: DOS
Programming language: FORTRAN
Year: 1991
Summary: Mathematical model of the fishing vessel addapted for the
conceptdesign of stern trawler. It comprises: hull geometry, poweringin
trawling and in free running conditions, weight estimating,center of
gravity and stability control, constraints evaluation,design attribute
evaluation, operating cycle definition. Thereare two modes of operation:
interactive conversational design anda module for multiattribute
optimization using fuzzy setmembership grade evaluation, Monte Carlo
sampling and selectionof Pareto-optimal (nondominated) designs.
Keywords: mathematical model, concept design, fishing vessel, trawler, optimization, fuzzy set, membership grade, Monte Carlo method, Pareto optimum
- Type of paper
: Computer program
Title: PLANEX - mathematical model of planing hull
- Authors:
- Grubišić, Izvor (76234)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: PC
Operating system: DOS
Programming language: FORTRAN
Year: 1992
Summary: Mathematical model of hard chine planing hull for concept
designcomprises: hull geometry definition, hull arangement,
weightestimating, powering for jet propulsion, resistance, trim andsquat
estimating, dynamical stability control, passenger comfortand seakeeping
evaluation, cost and economy calculation,constraints and attribute
evaluation. Interactive operation withmultiattribute optimization using
fuzzy set approach, Monte Carlosampling and selecting Pareto - optimal
(nondominated) designs.The model is specialized for fast passenger ferries.
Keywords: mathematical model, concept design, planing hull, high speed craft, optimization, fuzzy set, membership grade, Monte Carlo method, Pareto optimum
- Type of paper
: Computer program
Title: RORO - mathematical model of the fast ro-ro ships
- Authors:
- Grubišić, Izvor (76234)
Odering party: Fakultet strojarstva i brodogradnje
HW platform: PC
Operating system: DOS
Programming language: FORTRAN
Year: 1993
Summary: Mathematical model of the fast ro-ro ship concept
designcomprises: hull geometry definition, hull arrangement,
weightestimating, space and area utilization, economy
performanceestimating, resistance, propeller optimization,
vibrationcontrol, seakeeping evaluating, constraints and
attributesevaluation. Interactive operation with multiattributeoptimization
using fuzzy set approach, Monte Carlo sampling andselecting Pareto optimal
(nondominated) designs. Special part ofthe package is a roitine for tuning
the mathematical modelaccording to the experimantal data from towing tank
(ifavailable).
Keywords: mathematical model, concept design, ro-ro ship, optimization, fuzzy set, membership grade, Monte Carlo method, Pareto optimum
- Type of paper
: Computer program
Title: NAVIX - system for interactive hull form definition and
for hydrostatical calculations
- Authors:
- Grubišić, Izvor (76234)
Odering party: Fakultet strojarstva i brodogradnje
HW platform: PC
Operating system: DOS
Programming language: FORTRAN
Year: 1991
Summary: Hull form definition via vire frame input and an
interactivemanipulation using 3D rational cubic splines in
tension.Graphical visualization on screen and an output for AutoCad.Offset
printing. Hydrostatical calculation of arbitrary hullshape including
multihull, tunnel, bulb and hard chine forms.Stability of intact and of the
symetricaly flooded ship with freetrim. IMO criteria control for intact
ship.
Keywords: hull form, spline hydrostatics, stability flooding, IMO criteria, offset table
- Type of paper
: Computer program
Title: VELOX - resistance calculation, propeller design and speed
prediction
- Authors:
- Grubišić, Izvor (76234)
Odering party: Fakultet strojarstva i brodogradnje
HW platform: PC
Operating system: DOS
Programming language: FORTRAN
Year: 1992
Summary: Resistance calculation based onČ model data,
Holtrop'Mennenmethod, Oortmmerssen method, Mercier'Savitsky method.
Propellerdesign based on: model data, Wageningen B-series
polynomials,segmental propellers ( Gawn-Burrill), ducted propellers
(vanMaanen). Cavitation control based on Keller and on Burrillcriteria.
Appendage resistance is included.
Keywords: resistance, propulsion, speed prediction, propeller design
- Type of paper
: Computer program
Title: RULEX - system for the generation of hull developable
surfaces
- Authors:
- Grubišić, Izvor (76234)
Odering party: Fakultet strojarstva i brodogradnje
Institution depot: Fakultet strojarstva i brodogradnje
HW platform: PC
Operating system: DOS
Programming language: FORTRAN
Year: 1993
Summary: A system for design and fairing chines as 3D curves via
splines.Fitting developable surfaces between chines is
performedautomaticaly respecting end point rullings. Developing
rulledsurface by triangulation and fitting minimal rectangle arroundit.
Calculating area and weight of each such plate as developed.Generating
sections (frames) by cutting rullings by the set ofparallel planes.
Keywords: rulled surface, developable surface, hard chine, triangulation
- Type of paper
: Survey/Study
Title:
- Authors:
- Čorić, Većeslav (77520)
- Kalinovčić, Hrvoje (181804)
- Ljulj, Andrija
Ordering party: Poduzeće Hrvatske ceste
Institution depot: Fakultet strojarstva i brodogradnje
Year: 1992
Number of pages: 35
Language: hrvatski
- Type of paper
: Survey/Study
Title: RELIABILTY EVALUATION OF THE PONTOON BRIDGE IN NOVSKO
ŽDRILO POSITION
- Authors:
- Čorić, Većeslav (77520)
- Ljulj, Andrija
Ordering party: Poduzeće Hrvatske ceste
Institution depot: Fakultet strojarstva i brodogradnje
Year: 1992
Number of pages: 103
Language: hrvatski
- Type of paper
: Survey/Study
Title: Research on Propeller-hull Interaction Parameters and
their Applicatin on Evaluation of Hull Form and Propeller Geometry during
Design Stage
- Authors:
- Grubišić, Rajko (74052)
Institution depot: Fakultet strojarstva i brodogradnje
Year: 1993
Number of pages: 0
Language: hrvatski
Summary: The main consideration of this study is the research
offollowing features of propeller-hull interaction: non-uniforminflow in
the propeller plane, spanwise blade loadingdistribution, nonstationary
propeller shaft forces and hullsurface pressure fluctuations. As input for
their assessmentroutine model test results are used. In order to evaluate
thehull form and propeller design, obtained results are undergoing afurther
correlation analysis with appropriate criteria forexcitation limits. The
presented procedure is illustrated on anumerical example of a series 60
model ship for which detailedexperimental and computational data were
available.
Keywords: propeller-hull interaction
- Type of paper
: Technical report
Title: Ship Structure Dynamic - Programming support 1992
Institution depot: Fakultet strojarstva i brodogradnje
Year: 1992
Number of pages: 0
Language: hrvatski
Summary: The purpose of this review is to illustrate in a
condensedform vibration problems of contemporary ships and possibilitiesof
their solution developed by the Vibration Group at theDepartment of Naval
Architecture and Off-shore Engineering.Namely, fast development of the
finite element method andcomputer facilities has resulted in building of
light ships withhigh power marine engines installed. The occurrence of
highervibration excitation levels and possible resonance became
morefrequent. Notifying these problems from the very beginning, theGroup
has developed and used sophisticated numerical methods andcomputer programs
for vibration analysis. Their review is givenhere.
- Type of paper
: Manuscript
Title: APPLICATION OF FINITE ELEMENT METHOD IN ANALYSIS OF
HYDRODYNAMIC REACTION
- Authors:
- Ljulj, Andrija
Language: hrvatski
Summary: In this article, the finite element method is applied for
solvingthe hydrodynamic reaction of are oscillatory rigid body motion
instill water. In the linear version of the problem we introducedsome
assumptions : motion is simple harmonic, square term isneglected, fluid is
idealised and irrotational. In this moment,the method is used only for
solving classical forms. Next step isto apply this method on complicate
forms, bottom effect andsemihull vessels.
Keywords: finite element method, velocity flow potential, added mass, damping
- Type of paper
: Manuscript
Title: Reliability Based Automated Design of Ship and Marine
Structures
- Authors:
- Žanić, Vedran (77913)
Language: engleski
Summary: A design method for concept level of structural design is
presented. The design method includes an analysis module and a
synthesis module. The analysis module contains: design load
definition procedure, response calculation via simplified FE
model, feasibility check via ultimate strength criteria,
reliability analysis, attribute value calculation blocks. Thesynthesis
module is based on adaptive generation of designs in
the feasible region. The concept of non-dominated points is used
for filtering efficient (Pareto) solutions which are then usedfor an
adaptive generation of further nondominated designs.Selection among
efficient solutions is performed by the goalprogramming approach. A design
model is run on the engineeringRISC workstation connected to the computing
surface fot parallel
processing. Simplified FE models and AFOSM reliability assesmentsare found
to be sufficient for selection of non-dominateddesigns.
Keywords: Reliability, Optimisation, design
- Type of paper
: Manuscript
Title: Higher Order Response Characteristics of Non-linear Marine
Dynamic Systems in Sea Waves
- Authors:
- Čorić, Većeslav (77520)
Language: engleski
Summary: In this article a theoretical method is presented for
estimating
the response statistics of a marine structure that can be modeled
as a second and third-order dynamics system subjected to a
stationary, Gaussian forcing input signal.The problem formulation
expresses the response in terms of a second and third-order
Volterra series. The method is particularly suitable for predict-
ing extreme responses in the following marine problems:
- ship rolling
- heaving of the ships with non-vertical walls
- swaying response of the moored marine structure
- second order wave force
Keywords: stochastic model, non-linear dynamic systems, Volterra's series, marine structures
- Type of paper
: Manuscript
Title: Sensityvity to correlation
- Authors:
- Žanić, Vedran (77913)
- Žiha, Kalman (55582)
Language: engleski
Summary: The sensitivity analysis of componental and system
reliability measures to correlation is considered. Time invariant
structural problems based on multivariate distribution models consistent
with prescribed marginal distributions and correlations are considered. The
conventional method, the fitting method and the Monte Carlo simulation
procedures are applied. The examples presented in the paper confirm the
relevance of the applied procedures.
Keywords: reliability,sensitivity, correlation, FORM, simulation
