an experimental and numerical study of ductile fracture of copper/stainless steel clad sheet in deep drawing process

this work is an attempt towards employing ductile damage criterion and finite elementsimulations for prediction of fracture initiation and evolution in deep drawing of copper/stainlesssteel clad sheets. the material mechanical properties and ductile damage parameters weredetermined through standard and notched tensile tests. the effect of some important processparameters on damage evolution were examined through numerical modeling and the acceptablerange of variations for each parameter were introduced in order to prevent tearing of the blankduring the process. the numerical predictions of deformation and fracture behavior were in a goodagreement with experimental observations.