Effect of Stress Correction on Strain Rate Dependence of Aluminum Alloy

Abstract

Effective stress-true plastic strain curves of aluminum alloy 5005-O were obtained by an optimization method using the experiment analysis of digital image correlation method and the simulation of finite element method. Notched plate specimens with a radius of 30 mm were used for tensile tests. The effects of strain rate on flow stress after stress correction were examined. The flow stresses at a true strain of 0.40 corrected about 5%. Strain-rate sensitivity exponents m before and after stress correction were almost the same.