80 research outputs found
FEATURE-BASED GEOMETRIC MODELLING AND ANALYSIS OF MULTIBODY MECHANICAL SYSTEM BEHAVIOUR
The aim of this paper is to present a modelling system and an application to analyse
the mechanical behaviour of a gear-box. Designing a new type of gear-box, there is a
real need for the concurrent engineering activities of the designers of geometric modelling,
mesh generation and mechanical analysis. In this system own developed contact types of
finite elements (FEM) have been used.
The new system contains some programs of the earlier system ASSYM (CASM
Lab.) for modelling the casing as the superstructure of a gear-box and its bearings as
FEM contact-macroelements. In the proposed system the designers can use the modeller
CAEDS (IBM Corp.) for feature-based geometric modelling and for generating the global
mesh model of casing, the FEM analysis processor Mac/NASTRAN (MacNeal-Schwendler
Corp.) and the new version of the N_SIM program (CASM Lab.) for modelling the pairs
of gears and the bearings, furthermore the New Grid (N.G.) preprocessor (CASM Lab.).
The N.G. can introduce the local mesh models of macroelements to the global mesh of
gear-box casing
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