Finite Element Analysis of a Cyclically Loaded Notched Bar Using Constitutive Models Based on the Cyclic Nonhardening Region

Summary

Implementing simple and elaborate constitutive models based on the cyclic nonhardening region, we perform elastoplastic FEM analysis of a notched bar subjected to cyclic loading. The models describe an important feature in cyclic plasticity, i.e., dependence of cyclic hardening of materials on the cyclic strain and stress ranges. This dependence is essential to structural analysis of cyclic plasticity, because structures have, in general, nonuniform distributions of the cyclic stress and strain ranges so that development of cyclic hardening depends on the location in structures. It is shown that the models are implemented without difficulty.