Simultaneous analysis method for tolerancing flexible mechanisms

Abstract

We propose a simultaneous method to make a tolerancing analysis of a deformable system. This method solves effective configurations on an assembly, deformations of mechanical parts and joints, and internal forces. It can be used in the aim of testing tolerancing and its technological consequences as life cycles or load levels (maximum static equivalent stress, fatigue stress,...). We have to discretize the assembly in elastic parts and joints (a joint can be a couple of surfaces or a component).

In order to make this analysis, we must program the component behaviour. This is the relationship between displacements and forces within or without the clearance domain for a joint component. A functioning point has got up to thirteen parameters maximum : six for displacements plus six for forces plus one for technological limitation. The later can be the life cycle or the maximum equivalent stress or maximum force.