Development of a punching technique for ductile fracture testing over a wide range of stress states and strain rates

[摘要] (cont.) The quasistatic punching experiments are verified against a multi-axial fracture testing technique previously demonstrated by other researchers. From application of the aforementioned methodology to a steels used in sheet metal forming and crash worthiness, the current thesis has shed insight into the dependence of ductility on stress triaxiality, Lode parameter, and strain rate for quasi-static to intermediate strain rates.

[发布机构] Massachusetts Institute of Technology