AN EXPERIMENTAL AND NUMERICAL STUDY OF DUCTILE FRACTURE OF COPPER/STAINLESS STEEL CLAD SHEET IN DEEP DRAWING PROCESS

Document Type: Research Paper

Authors

Dept. of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, I. R. of Iran

Abstract

This work is an attempt towards employing ductile damage criterion and finite element
simulations for prediction of fracture initiation and evolution in deep drawing of copper/stainless
steel clad sheets. The material mechanical properties and ductile damage parameters were
determined through standard and notched tensile tests. The effect of some important process
parameters on damage evolution were examined through numerical modeling and the acceptable
range of variations for each parameter were introduced in order to prevent tearing of the blank
during the process. The numerical predictions of deformation and fracture behavior were in a good
agreement with experimental observations.

Keywords