- Type of paper
: Paper in journal
Title: Plates and planes structures strengthened by girders
- Authors:
- Gotovac, Blaž (14020)
- Mihanović, Ante (30725)
Journal: Inženjersko modeliranje
Number: 3
ISSN: 0352-9495
Volume: 3
Year: 1990
Pages: from 175 to 180
Number of references: 4
Language: hrvatski
Summary: This paper presents the programme for the static analysis
of the plate and plane structures strengthened by girders. The numerical
model is formulated by 2D and 1D combined isoparametric finite elements.
The geometry of the structure may be arbitrarily chosen. The addition of 1D
elements does not increase the number of degrees of freedom of the global
model.
Keywords: numerical model, plate, beam
- Type of paper
: Paper in journal
Title: Implementation of the analytical solutions in the finite
element method
- Authors:
- Gotovac, Blaž (14020)
- Gusić, Goran
Journal: Engineering modelling
Number: 3
ISSN: 0352-9495
Volume: 5
Year: 1992
Pages: from 107 to 111
Number of references: 7
Language: engleski
Summary: This paper presents an application of well known analytical
solutions for removing certain restrictions referred to the local effect
simulation in the finite element method. The procedure is illustrated by
the problem of plate bending which are subjected to concentrated load. The
analytical solution is applied in the immediate neighbourhood of the
concentrated load as a "particular" part of the total solution, while the
"homogenous" part of the solution is obtained on the whole region by means
of finite element technique.
The given examples present high accuracy of the considered approach
achieved by coarse finite element meshes.
This technique can be also applied to problems of another type, using St.
Venant's principle of the equivalent applied forces outside of the loaded
region.
Keywords: analytical solution, plate bending, concentrated load
- Type of paper
: Paper in journal
Title: Numerical analysis of engineering structures composed of
surface and line elements
- Authors:
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
Journal: Engineering modelling
Number: 3-4
ISSN: 1330-1365
Volume: 7
Year: 1994
Pages: from 97 to 108
Number of references: 25
Language: engleski
Summary: This paper presents the new isoparametric shell finite
element and its features in the numerical analysis of complex engineering
structures. Each element node has six degrees of freedom, i.e. three
translations and three rotations. This shell finite element is derive from
the 20-node three dimensional element and it is based on the degenerated
continuum concept. The introduction of the finite rotational stiffness of
the shell around the normal into its middle surface, which usually absents
in the shell analysis, is performed in the same way as the inclusion of the
rotational degree of freedom into a membrane.
In this paper, the drilling degree of freedom in the shell element node is
evaluated from equilibrium equations of the Cosserat continuum by
abandoning the usual assumption that the stress tensor is symmetric. The
procedure is based on the variational formulation which implies independent
displacement and rotation fields.
The new isoparametric shell finite element with six degrees of freedom per
node enables a combination with different types of finite elements because
it ensures compatibility of displacements and rotations at their
connections. It is also suitable for modelling folded shell structures.
This work deals with a combination of this shell element wiyh the standard
beam finite element, so that an efficient tool for the numerical analysis
of structures composed of shells, plates, walls, beams and columns
obtained. The capabilities of the proposed shell element are given through
various numerical and practical examples.
Keywords: shell elements, beam elements, drilling degree of freedom, Cosserat continuum, variational formulation.
- Type of paper
: Paper in proceedings
Title: Interface elements
- Authors:
- Gotovac, Blaž (14020)
- Marović, Pavao (70744)
- Kozulić, Vedrana (176112)
- Editors
- Radić, Jure
Proceedings title: Zbornik radova Prvog radnog sabora Graditelji u obnovi Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 143 to 148
Meeting: Radni sabor "GRADITELJI U OBNOVI HRVATSKE"
Held: from 06/25/92 to 06/27/92
Summary: The existing approach and software based on Finite
ElementMethod is often not sufficient for the numerical simulation ofthe
behavior of built structures, cracks modelling andsoil-structure
interaction. A special type of finite "interface"element is developed for
the proper modelling of joints, cracks,glued conjunctions and various types
of contacts. The interfaceelements are used as materially and geometrically
nonlinear onlyat particular portions, while the remaining part is treated
onthe linear, and only exceptionally nonlinear, analysis level.
Keywords: built structures, crack, joint, contact
- Type of paper
: Paper in proceedings
Title: Interaction problem in elastic analysis
- Authors:
- Gotovac, Blaž (14020)
- Marović, Pavao (70744)
- Kozulić, Vedrana (176112)
- Editors
- Fischinger, Matej
- Lopatič, Jože
- Saje, Franc
Proceedings title: Zbornik radova 14. zborovanja gradbenih konstruktorjev Slovenije
Language: slovenski
Place: Bled, Slovenija
Year: 1992
Pages: from 295 to 302
Meeting: 14. zborovanje gradbenih konstruktorjev Slovenije
Held: from 09/15/92 to 09/17/92
Summary: In this paper one approach for solving a interaction
problembetween bodies which are stil in elastic range is shown. Namely,the
existing approach and software based on finite element methodis often not
sufficient for the numerical simulation of thebehaviour of built
structures, cracks modelling and soil -structure interaction. A special
type of finite "interface"element is developed for the proper modelling of
joints, cracks,glued conjunctions and various types of contacts. The
interfaceelements are used as materially and geometrically nonlinear onlyat
particular portions, while the remaining part is treated, fornow, on the
linear and elastic level.
Keywords: interaction, crack, glued conjunction, contact
- Type of paper
: Paper in proceedings
Title: Nonlinear analysis of a cooling tower
- Authors:
- Damjanić, Frano B. (8883)
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
- Stanek, Marjan
- Editors
- Fischinger, Matej
- Lopatič, Jože
- Saje, Franc
Proceedings title: Zbornik 15. zborovanja gradbenih konstruktorjev Slovenije
Language: slovenski
Place: Bled, Slovenija
Year: 1993
ISBN/ISSN: 86-80223-28-X
Pages: from 189 to 196
Meeting: 15. zborovanje gradbenih konstruktorjev Slovenije
Held: from 09/16/93 to 09/17/93
Summary: A cooling tower under gravity and wind load is considered.
Thespecialist finite shell element programme CONSHELL for theanalysis of
reinforced concrete shell structures is employed. Theprogramme includes
modelling of the most dominant nonlinearconcrete and reinforcement
behaviour (Multiaxial elastoplasticcompression and crushing, and tensile
cracking of concrete, aswell as one-dimensional elastoplastic steel
behaviour). Thelayered element formulation permits an easy
reinforcementlocation. The example shown illustrates a need for
realisticnonlinear analysis when a complex structure is to be designed.
Keywords: cooling tower, reinforced concrete, shell, nonlinear analysis
- Type of paper
: Paper in proceedings
Title: Additional rotational degree of freedom in the mid-surface
of shell elements
- Authors:
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
- Damjanić, Frano B. (8883)
- Editors
- Fischinger, Matej
- Lopatič, Jože
- Saje, Franc
Proceedings title: Zbornik 15. zborovanja gradbenih konstruktorjev Slovenije
Language: slovenski
Place: Bled, Slovenija
Year: 1993
ISBN/ISSN: 86-80223-28-X
Pages: from 229 to 236
Meeting: 15. zborovanje gradbenih konstruktorjev Slovenije
Held: from 09/16/93 to 09/17/93
Summary: Introduction of an additional rotational degree of freedom
to theplane stress analysis is presented. Analogical procedure isemployed
in order to introduce the sixth degree of freedom atnodes of shell elements
with constrained rotation around thenormal to the shell mid-surface. The
proposed procedure is provedto be very convenient for modelling of beam and
shell elementconnections.
Keywords: rotational degree of freedom, shell, normal, beam
- Type of paper
: Paper in proceedings
Title: Nonlinear analysis of a complex engineering structures
- Authors:
- Gotovac, Blaž (14020)
- Damjanić, Frano B. (8883)
- Kozulić, Vedrana (176112)
- Stanek, Marjan
- Editors
- Radić, Jure
Proceedings title: Zbornik radova 2. Radnog sabora Graditelji u obnovi Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 953-6175-02-9
Pages: from 127 to 132
Meeting: Drugi radni sabor GRADITELJI U OBNOVI HRVATSKE
Held: from 10/13/93 to 10/15/93
Summary: In the endeavour to complex structures be constructed
morequalitative and to be more stable, their completely analysis isneedful.
In this paper a cooling tower under gravity and windload is considered. The
specialist finite shell element programmeCONSHELL for the analysis of
reinforced concrete shell structuresis employed. The programme includes
modelling of the mostdominant nonlinear concrete and reinforcement
behaviour(Multiaxial elastoplastic compreession and crushing, and
tensilecracking of concrete, as well as one-dimensional elastoplasticstell
behaviour). The layered element formulation permits an easyreinforcement
location. The example shown illustrates a need forrealistic nonlinear
analysis when a complex structure is to bedesigned.
Keywords: complex structure, cooling tower, reinforced concrete, nonlinear analysis, tensile cracking
- Type of paper
: Paper in proceedings
Title: Integrated analysis of complex structures
- Authors:
- Damjanić, Frano B. (8883)
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
- Editors
- Duhovnik, Janez
Proceedings title: Zbornik 7. seminarja Računalnik v gredbenem inženirstvu
Language: slovenski
Place: Ljubljana, Slovenija
Year: 1994
Pages: from 97 to 104
Meeting: 7. seminar Računalnik v gradbenem inženirstvu
Held: from 04/15/94 to 04/15/94
Summary: A traditional analysis of an engineering structure is
mostly based on the analysis of individual structural elements. For
example, horizontal structures (slabs, shells, girders, etc.) are
separately analysed and then vertical structures (columns, walls, etc.)
subjected to load due to the horizontal structures are independently
analysed. However, the use of this analysis system could result, in some
cases, in significant loss of solution accuracy. Namely, using this system
interaction effects between particular structural elements are neglected.
An integrated structural analysis of a whole structure which takes into
account all structural elements including their interaction could only
provide more accurate and reliable results. We have developed our software
SHELL6 and its applicability for the integrated structural analysis is
presented in the paper. Both the shell and beam elements have six degrees
of freedom ( three for displacements and three for rotations), so that the
compatibility is ensured at a common node of adjacent elements.
A practical example is solved in order to illustrate the SHELL6 capability.
One industrial hall structure is discretised by 162 shell elements
describing shall roof and 50 beam elements describing columns and girders.
The structure subjected to wind and crane jack load is analysed as a whole
structure. Typical results (i.e. deformations, internal forces and
principal stresses) obtained with the SHELL6 code are presented in a
graphical form.
Keywords: shell, girders, columns, integrated analysis, industrial hall.
- Type of paper
: Paper in proceedings
Title: On shell finite elements with an additional drilling
degree of freedom
- Authors:
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
- Damjanić, Frano B. (8883)
- Editors
- Sorić, Jurica
- Vranković, Nikola
Proceedings title: Zbornik radova 1. Kongresa hrvatskog društva za mehaniku
Language: engleski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-96243-0-4
Pages: from 15 to 22
Meeting: 1. Kongres hrvatskog društva za mehaniku
Held: from 09/14/94 to 09/17/94
Summary: Inclusion of an additional rotational degree of freedom to
the plane stress analysis is presented. According to this formulation, an
isoparametric C0 finite shell element with six degrees of freedom per node
is derived. The element exhibits excellent accuracy characteristics. In
combination with finite beam element, very efficient numerical model for
analysis of complex structures consisting of shells, beams and columns is
developed.
Keywords: shell elements, drilling degree of freedom, beams elements, Cosserat equilibrium equations, shear tensor.
- Type of paper
: Paper in proceedings
Title: Numerical modelling of joint of shell and column
- Authors:
- Kozulić, Vedrana (176112)
- Gotovac, Blaž (14020)
- Damjanić, Frano B. (8883)
- Editors
- Sorić, Jurica
- Vranković, Nikola
Proceedings title: Zbornik radova 1. Kongresa hrvatskog društva za mehaniku
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-96243-0-4
Pages: from 131 to 138
Meeting: 1. Kongres hrvatskog društva za mehaniku
Held: from 09/14/94 to 09/17/94
Summary: Numerical analysis of structures consisting of shells and
beams implies specific problems of connecting various finite elements into
a compatible entire. This work presents the algorithm based upon new
isoparametric finite shell elements with six degrees of freedom per node
and standard finite beam elements. The main problem related to the
satisfying the fully compatibility of displacements and rotations in the
common nodes, has been solved by formulating of the rotational degree of
freedom around the normal to the mid-surface of the shell. Specially, the
joint of shell and column which transfers torsional moment to the shell
mid-surface is considered. The compare with analytical solution confirms
the accuracy and reliability of employed numerical process.
Keywords: shell, column, concentrated moment, compatibility of displacements and rotations, rotational degrees of freedom.
- Type of paper
: Paper in proceedings
Title: Practical application of software for integrated analysis
of complex structures
- Authors:
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
- Editors
- Radić, Jure
Proceedings title: Zbornik radova 3. radnog sabora Graditelji u obnovi Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 953-6175-04-5
Pages: from 425 to 432
Meeting: Treći radni sabor Graditelji u obnovi Hrvatske
Held: from 10/13/94 to 10/15/94
Summary: The modern approach to analysis to complex engineering
structures involves the simulation of simultaneous behaviour of all
structural elements. We have developed our software SHELL6 which enables
the integrated analysis of structures consisting of different structural
element, i.e. plates, shells, columns, beams,etc. The applicability of this
software is illustrated in the paper on some practical examples. Typical
results (deformations, internal forces and principal stresses) obtained
with the SHELL6 code are presented in a graphical form.
Keywords: integrated structure, isoparametrical finite shell element, beam finite element, six degrees of freedom, folded structure.
- Type of paper
: Mentorship
Title: Numerical analysis of structures consisting of shells and
columns
Faculty: Građevinski fakultet Sveučilište u Splitu
Date of defense: 12/22/93
Number of pages: 128
Author: Kozulić mr. Vedrana
Degree level: M.A.
- Type of paper
: Computer program
Title: Computer program SHELL6
- Authors:
- Damjanić, Frano B. (8883)
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
Odering party: Građevinski fakultet
Institution depot: Građevinski fakultet
HW platform: PC AT/486
Operating system: DOS
Programming language: FORTRAN 77
Year: 1993
Summary: Program for numerical analysis of space structures
consisting ofisoparametric finite shell elements and linear prismatic
beamelements. Different types of loading can be analysed with thisprogram:
gravity, moving load, wind, inertial load, temperatureload.
Keywords: shell, beam, finite element
- Type of paper
: Computer program
Title: Program LINKO
- Authors:
- Gotovac, Blaž (14020)
Odering party: Građevinski fakultet
Institution depot: Građevinski fakultet
HW platform: PC AT/486
Operating system: DOS
Programming language: FORTRAN 77
Year: 1991
Summary: Program for numerical analysis of line structures (plane
andspace truss, plane and space frame, plane grid)
Keywords: truss, frame, grid
- Type of paper
: Computer program
Title: Program CONTACT
- Authors:
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
Odering party: Građevinski fakultet
Institution depot: Građevinski fakultet
HW platform: PC AT/486
Operating system: DOS
Programming language: FORTRAN 77
Year: 1992
Summary: Program for numerical analysis of plane stress and plane
strainincluding nonlinear behaviour of different types of contacts.
Keywords: contact, plane, interaction
- Type of paper
: Computer program
Title: Structural Integrated GeoMechanical Analysis
- Authors:
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
Odering party: Građevinski fakultet Split
Institution depot: Građevinski fakultet Split
HW platform: PC 486
Operating system: MS DOS
Programming language: Fortran 90
Year: 1995
Summary: The programme for nonlinear analysis of plane states and
axisymmetric problems. It is based on the finite element method and adapted
to solving of geotechnical problems in the rock mass. It enables the
numerical simulation of geotechnical works by attending the changes of
loadings through the build phases. The program package consists the
preprocessor for generating of input data and the graphic postprocessor for
presenting of results on screen, printer or plotter.
Keywords: geomechanical analysis, finite element method, numerical simulation, build phases.
Other: Priručnik za uporabu programa SIGMA, verzija 1.0, 1995.
- Type of paper
: Survey/Study
Title: Numerical analysis of carrying capacity and stability of
poultice and portals of tunnel "MAČKOVAC".
- Authors:
- Gotovac, Blaž (14020)
Ordering party: IGH - Zagreb, PC - Split
Institution depot: "Hrvatske ceste"
Year: 1992
Number of pages: 130
Language: hrvatski
- Type of paper
: Survey/Study
Title: Numerical analysis of carrying capacity and stability of
poultice and portals of tunel "MRAVINCI".
- Authors:
- Gotovac, Blaž (14020)
Ordering party: IGH - Zagreb, PC - Split
Institution depot: "Hrvatske ceste"
Year: 1992
Number of pages: 138
Language: hrvatski
- Type of paper
: Survey/Study
Title: Numerical analysis of carrying capacity and stability of
poultice and portals of tunel "KLIS-GRLO".
- Authors:
- Gotovac, Blaž (14020)
Ordering party: IGH - Zagreb, PC - Split
Institution depot: "Hrvatske ceste"
Year: 1991
Number of pages: 47
Language: hrvatski
- Type of paper
: Survey/Study
Title: Numerical analysis of carrying capacity and stability of
poultice and portals of tunnel "KLIS-KOSA".
- Authors:
- Gotovac, Blaž (14020)
Ordering party: IGH - Zagreb, PC - Split
Institution depot: "Hrvatske ceste"
Year: 1991
Number of pages: 54
Language: hrvatski
- Type of paper
: Survey/Study
Title:
- Authors:
- Gotovac, Blaž (14020)
Ordering party: Vodoprivreda BiH
Institution depot: Vodoprivreda BiH
Year: 1991
Number of pages: 96
Language: hrvatski
- Type of paper
: Survey/Study
Title:
- Authors:
- Gotovac, Blaž (14020)
- Kozulić, Vedrana (176112)
Ordering party: J.P. ELEKTROPRIVREDA H.R. HERCEG BOSNA
Institution depot: "CONEX"
Year: 1994
Number of pages: 75
Language: hrvatski
- Type of paper
: Survey/Study
Title:
- Authors:
- Gotovac, Blaž (14020)
Ordering party: "Slobodna Dalmacija"
Institution depot: "Studio R" - Split
Year: 1995
Number of pages: 173
Language: hrvatski
