Multiscale friction model for hot sheet metal forming

Abstract The accurate description of friction is critical in the finite element (FE) simulation sheet metal forming process. Usually, oversimplified through use a constant Coulomb coefficient. In this study, application an existing multiscale model extended to hot stamping accounts for effects tool and surface topography as well evolution contact pressure, temperature, bulk strain during stamping. Normal load flattening strip drawing experiments are performed calibrate model. results show that can relatively predict draw when due wear incorporated. Finally, formulated was demonstrated FE hot-stamped part.