MODELING OF THE ELASTOPLASTIC BEHAVIOR OF ROLLED ALUMINUM-ALLOY FOR FORMING APPLICATIONS

This study deals with the modelling of the elasto-plastic behavior of aluminium sheets using a self-consistent scheme based on scale transit ion techniques. The influence of the initial crystallography textures on the elasto-plastic response of the material has been analysed. Crys tallographic orientation of sets of grains (single crystals) have been generated using statistical repartition functions. The physical elast o-plastic parameters required by the self-consistent model have been d educed from experimental tension curves. The Lankford coefficients hav e been then calculated for various sample orientations with respect to the rolling direction. A good agreement has been found between experi mental and predicted pole figures and tension curves. as well as the L ankford coefficients. (C) 1998 Published by Elsevier Science S.A.