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ANALYSIS OF MECHANICAL SYSTEMS USING INTERVAL COMPUTATIONS APPLIED TO FINITE ELEMENT METHODS

✍ Scribed by O. DESSOMBZ; F. THOUVEREZ; J.-P. LAÎNÉ; L. JÉZÉQUEL

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
260 KB
Volume
239
Category
Article
ISSN
0022-460X

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✦ Synopsis

This paper addresses the problem of mechanical systems in which parameters are uncertain and bounded. Interval calculation is used to "nd an envelope of transfer functions for mechanical systems modelled with "nite elements. Within this context, a new formulation has been developed for "nite element problems involving bounded parameters, to avoid the problems of overestimation. An iterative algorithm is introduced, which leads to a conservative solution for linear mechanical problems. A method to ensure the convergence of this algorithm is also proposed. This new algorithm has been tested on simple mechanical systems, and leads to a conservative envelope of the transfer functions.

2001 Academic Press

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