Hysteresis Model of Structural Materials under Repeated Elasto-Plastic Deformation

Abstract

This study has been attempted in order to simulate a plastic fatigue failure process and transition of hysteresis loops under a cyclic elasto-plastic deformation. The hysteresis model proposed herein consists of continuously distributed parallel elements. It can display the fatigue failure process of material which hardens in its initial stage, and deteriorates in the second stage unitil complete failure occurs. The numerical results based on the model are compared with the experimental results of a plastic bending fatigue test on SS 41 H-section steel beams.