Approximative generation of springback compensation surface in stamping die design

generation of correspondence between reference geometry mesh and mesh the measured from real form product

Abstract

Recently, high strength steel sheets are rapidly introduced to automotive parts and amount of springback of these parts increases extremely. It is required to prevent the amount. However, mesh based on the measured from real formed sheets after springback does not have the same topology as the one of reference geometry mesh. However, different topology disables the user to use the proposed compensation estimation method. In this study, we propose a method where the correspondences can be found between the reference mesh and the measured mesh which has the different topology from the reference one, and which has the deformation relationship with it, under the preserving property.