Plastic Waves of Combined Stress From Longitudinal Impact of a Pretorqued Tube, Analysis by Rate-Dependent Theory

Abstract

A rate-dependent theory for a strain-hardening material is used to interpret the experimental data of Lipkin and Clifton [6] for combined stress plastic waves. The numerical solution presented gives, as expected, a better qualitative explanation of the nonconstant-state regions than a rate-independent theory solution. The overall results show that, even for a relatively rate-insensitive material, such as the aluminum used in the experiments, a rate-dependent solution can be worked out that gives at least as good a representation of the complete dynamic plastic response of the tube as is given by a rate-independent theory solution.