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Tolérancement et analyse des structures au service des systèmes souples et du défaut de forme

Abstract : - The analysis of deviations of mechanisms is usually made with the assumption that the components are rigid. The used tools come from the mechanism theory. They lead to use a mobility parametrization (Small Displacement Torsors). The analysis of deformation is made assuming that the geometry is perfect. The problem is to link those two worlds. In this document we try to give some answers. We have made an extension of the theory of ?SDT domains? used in tolerancing. Thus the analyses of deviations of flexible mechanisms can be made in the worst case (assumptions of our tolerancing models). The mathematical developments are not easy to understand to the designer. In order to help him, we propose to use in tolerancing the process used in the FEA.
- In the domain of form errors, the literature shows methods useful in the case of simple geometries. The help of structural dynamics makes possible to propose a more general method to parameterize form deviations. A natural basis can be built for any kind of geometry. Our recent studies link this basis of form defects to other methods in order to analyse tolerances. The arithmetical and statistical aspects are used with industrial applications, leading to improve them to be usable as possible.
- As studies of deviations are not limited to mechanisms, we have applied our method to Mechatronics systems.
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Habilitation à diriger des recherches
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https://tel.archives-ouvertes.fr/tel-00359471
Contributor : Serge Samper <>
Submitted on : Monday, February 9, 2009 - 6:54:01 PM
Last modification on : Friday, November 6, 2020 - 3:34:48 AM
Long-term archiving on: : Friday, October 12, 2012 - 11:10:09 AM

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Serge Samper. Tolérancement et analyse des structures au service des systèmes souples et du défaut de forme. Mécanique [physics.med-ph]. Université de Savoie, 2007. ⟨tel-00359471⟩

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