公开(公告)号：US10956634B2

公开(公告)日：2021-03-23

申请号：US15871779

申请日：2018-01-15

Applicant: Ford Motor Company

Inventor： Yinong Shen ,  Feng Ren ,  Yuan Gan ,  S. George Luckey, Jr. ,  Evangelos Liasi

IPC: G06F30/23 ,  G06F30/17 ,  G06F111/10 ,  G06F113/24

Abstract: A method of evaluating a sheet metal stamping simulation is provided. The method may include defining elements of a finite-element mesh representing a stamped panel, operating on the elements to simulate deformation of the panel during stamping to generate, for each of the elements, incremental differential major and minor plastic strain values, applying a weighting factor to temporally adjacent pairs of the values to generate smoothed values, deriving, from the smoothed values and for each of the elements, a plurality of plastic strain incremental ratios representing plastic flow direction of the elements during the deformation, and altering colors of a map based on the ratios to represent changes in severity of plastic deformation of the stamped panel.