Prédiction du retour élastique en emboutissage avec une loi de comportement élastoplastique tenant compte des changements de trajet de déformation

Abstract

This work consists to study the spring back in the deep drawing of flat sheets. A phenomenological elastoplastic model taking into account the strain path change was implemented in the ABAQUS software using an implicit integration scheme. The simulations were realised on a benchmark deep drawing test designed to emphasize the spring back behaviour. A study on the influence of the process parameters was realised with the variation of blank holder force and friction coefficient between the tools and the sheet.