Modeling of Fatigue Crack Growth Based on Two Cyclic Plasticity Models

摘要: Based on two different cyclic plasticity models, fatigue crack growth for 16MnR steel specimens is simulated by using the same multi-axial damage criterion. The first model Jiang and Sehitoglu second simple nonlinear kinematic hardening model. elastic-plastic stress-strain field near tip obtained respectively models. According to criterion, determined basis of responses. can accurately capture deformation behavior predictions rate are in agreement with experimental results. However, lots material constants need be fitted more tests should conducted. very simple. parameters acquired easily uniaxial tests. Compared data, prediction results lead some errors adopting