Thermal ratchetting of a cylinder subjected to a moving temperature front: Effects of kinematic hardening rules on the analysis (Q1126420)

Effects of kinematic hardening rules on the thermal ratchetting analysis are discussed by implementing in finite element analysis the following four kinds of kinematic hardening rules: the perfectly plastic model, the linear kinematic hardening rule, the classical nonlinear kinematic hardening rule of Armstrong and Frederick, and the rule proposed recently by Ohno and Wang. It is shown that disregard of transient nonlinear hardening after yielding leads to overestimating the thermal ratchetting, that a rule predicting larger mechanical ratchetting makes the thermal ratchetting more serious, and that the Ohno and Wang rule may render the analysis most realistic among them.