This book gives a unified presentation of the research performed in the field of multiscale modelling in sheet metal forming over the course of more than thirty years by the members of six teams from internationally acclaimed universities. The first chapter is devoted to the presentation of some recent phenomenological yield criteria BBC 2005 and BBC 2008 developed at the CERTETA center from the Technical University of ClujNapoca. An overview on the crystallographic texture and plastic anisotro