Geometrical Study of Assembly Behaviour, Taking Into Accounts Rigid Components' Deviations, Actual Geometric Variations and Deformations

摘要

Simulations of mechanisms' geometrical behaviour is a topical industrial need. Thanks to these simulations, gain of time during design and assembly stages can be important. We study the influence of components' geometrical variations on functional conditions. It corresponds to an extension of work realised with rigid body hypothesis, and allows study of mechanisms made by some flexible component. Majority of works dealing with components' deformation on assembly are focused on welded, riveted or bolded assembly. Contrary to numerical results generally obtained, our objective is to determine coefficients of influence of the studied parameters in a symbolic writing, thanks to the study of geometrical behaviour of mechanism, considering geometrical pairs and actual geometry variations. This method is illustrated through an industrial study, based on an aeronautic example.