An investigation into the effect of strain rate on forming limit diagram using ductile fracture criteria

摘要

In this study, forming limit diagram (FLD) is experimentally acquired for aluminum alloy 3105 in usual velocities (Quasi-static condition). In addition, numerical simulation by commercially available finite element code ABAQUS/Explicit using ductile fracture criteria is performed. Simulation is done in quasi-static condition (ε ≤ 0.01/s) and case of forming by lowimpact (ε ≤ 50/s).The results show that a substantial improvement in high-strain-rate formability of the aluminum sheet can be obtained.