SVIBOR - Papers quoted in CC - project code: 2-08-201
MINISTRY OF SCIENCE AND TECHNOLOGY
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SVIBOR - Collecting Data on Projects in Croatia
Papers quoted in Current Contents on project 2-08-201
Quoted papers: 5
Other papers: 13
Total: 18
Title: AN APLLICATION OF GRAPH THEORY AND NONLINEAR PROGRAMMING
TO THE KINEMATIC SYNTHESIS OF MECHANISMS
- Authors:
- Vučina, Damir (129716)
- Freudenstein, Ferdinand
Journal: Mechanical Machinery Theory
Number: 6
ISSN: 0094-114X
Volume: 26
Year: 1991
Pages: from 553 to 563
Number of references: 13
Language: engleski
Summary: In this investigation a systematic "start-from-zero"
approach of mechanisms has been described and applied to the creation of an
automotive windshield-wiper mechanism. Following specification of the
design goals and restrictions, the potentially useful kinematic structures
have been generated with aid of graph theory. A preliminary functional
screening of these structures has yielded several potentially useful
mechanisms. The type synthesis was followed by dimensional synthesis,
formulated as a nonlinear programming problem. Physical design goals and
constrains were transformed into the objective and penalty functions and
then optimized. The final result was a proportioned potentially optimal
mechanism. An alternative approach to the dimensional synthesis of the
generated kinematic structures in terms of precision points has been
discused as well.
Keywords: Graph theory, nonlinear programming, kinematic synthesis of mechanisms
Title: APPLICATION OF THE HARMONIC ACCELERATION METHOD FOR
NONLINEAR DYNAMIC ANALYSIS
- Authors:
- Senjanović, Ivo
- Lozina, Željan (96925)
Journal: Computers & Structures
Number: 6
ISSN: 0045-7949
Volume: 47
Year: 1993
Pages: from 927 to 937
Number of references: 12
Language: engleski
Summary: The application of the harmonic acceleration method, which
shows some advantages in linear transident vibration analysis compared to
the other commonly used methods, is extended to nonlinear problems
employing the mode superposition technique and an iteration procedure.
Stability analysis shows that the method is unconditionally stable. A
higher degree of accuracy is achieved. The efficiency of the method is
ilustrated by some simple numerical examples.
Keywords: Harmonic acceleration, nonlinear dynamic analysis
Title: FLOW FORMULATION VISCOPLASTIC FE ANALYSIS WITH BOUNDARY
FUNCTION
- Authors:
- Vučina, Damir (129716)
Journal: International Journal for Engineering Modelling
Number: 1-4
ISSN: 1330-1365
Volume: 6
Year: 1993
Pages: from 13 to 19
Number of references: 16
Language: engleski
Summary: The flow formulation approach to viscoplastic finite
element analysis of stationary metal forming problems is extended to cases
with strain rate and strain history sensitive material
constitution. Original numerical procedures are developed to determine
particular point trajectories that the strain rates are to be integrated
along. Corresponding expressions are derived under the assumption that the
history of the state variables of some point is given by their current
values at other points on the respective trajectory.
Boundary friction is introduced by having additional velocity-dependent
external load acting on flow elements, and by introducing a narrow
interface of neutral-behavior elements generating the frictional force on
regular flow elements.
Corresponding 2D finite element routines for materially-nonlinear analysis
are developed and applied to idealized cold plane strain rolling and
extrusion.
Keywords: Finite element, viscoplasticity, flow formulation
Title: CASE STUDIES ON PROCESS SEQUENCE DESIGN IN COLD FORMING OF
ENGINE VALVE SLIDER AND SELF-LOCKING NUTS
- Authors:
- Duplančić, Igor (10940)
- Kobayashi, Shiro
Journal: International Journal of Machine Tools & Manufacturing
Number: 6
ISSN: 0890-6955
Volume: 34
Year: 1994
Pages: from 817 to 828
Number of references: 8
Language: engleski
Summary: Two cases on process sequence design are presented. One
describes the procedure for manufacturing an engine valve slider, and the
other for self-locking nut manufacturing. They are based on experts'
experience. All operations required to produce final products, from raw
material are shown, and general cosiderations and rules for forming
sequence design are explained. For engine valve sliders several upsetting
processes are used as preforming operations and the final product is
obtained by combined forward and backward extrusion. In manufacturing of
self-locking nuts special features involved in design are shown in turning
the workpiece upside down during the process sequence and producing
intentionally a minor crack for the final operation of piercing. In
addition, both macro structure and micro structure analysis for major
deformation processes are shown.
Keywords: Process sequnce design, cold forming, engine valve slider, self-locking nut
Title: WORK CHARACTERISTICS OF AXIAL WIND TURBINES
- Authors:
- Vučina, Damir (129716)
- Pilić - Rabadan, Ljiljana
Journal: Strojarstvo
Number: 4
Volume: 32
Year: 1990
Pages: from 253 to 257
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