Comparison of optimization techniques in a tolerance analysis approach considering form defects

Lazhar Homri (1) , Jean-Yves Dantan (1) , Guillaume Levasseur (1)

1 LCFC - Laboratoire de Conception Fabrication Commande

In tolerancing analysis area, the most various existing approaches do not take form defects of parts into consideration. As high precisions assemblies cannot be analyzed with the assumption that form defects are negligible, the paper focuses in particular on the study of the form defects impacts on the assembly simulation and that by comparing two optimization algorithms (iHLRF and Quapro). The study is limited firstly to the cylinders. For the optimization, two main types of surfaces modelling are considered: difference surface-based method and real model. The compared models allow assessing the non-interferences between cylinders with form defects, potentially in contact. This is in the main issue to validate a tolerance analysis approach.

Mots clés: Tolerance analysis; Form defects; Optimization; IHLRF; Difference surface

Domaines: Mécanique [physics.med-ph]; Ingénierie assistée par ordinateur

Lazhar Homri, Jean-Yves Dantan, Guillaume Levasseur. Comparison of optimization techniques in a tolerance analysis approach considering form defects. 14th CIRP Conference on Computer Aided Tolerancing, May 2016, Göteborg, Sweden. pp.184-189, ⟨10.1016/j.procir.2016.02.022⟩. ⟨hal-01345299⟩