A CAD Model for Tolerance Analysis of non-rigid Planar parts assemblies

Currently, the tolerancing integration in CAD model is among the major interests of most mechanical manufacturers. Several studies and researches have been established to consider the geometrical and dimensional tolerances on the CAD modelers. However, the hypothesis of rigid parts is adopted in the digital mock-up. Thus, several physical factors are neglected; especially the deformations. In this regard, this paper presents a model for considering both tolerances and deformations in CAD model. The dimensional and geometrical tolerances are taken into account by the determination of assemblies configurations with defects basing on the worst case tolerancing. The Finite Elements (FE) computations are realized with realistic models. A method for modeling the realistic mating constraints, between rigid and non-rigid parts, is developed. The case study of an assembly with planar joint is presented. (C) 2018 The Authors. Published by Elsevier B.V.