An application of the hybrid constitutive model for cyclic plasticity to sinusoidal loading.

The recent study of the constitutive model for cyclic plasticity aims at the adequate description of additional hardening due to nonproportional cyclic loading, especially circular loading or, generally, sinusoidal loading. There is no constitutive equation which can describe additional hardening of nonproportional cyclic loading accurately. The authors have previously proposed the constitutive model for nonproportional cyclic loading, which could be called the hybrid constitutive model because the construction of the model is completed using the experimental results and the numerical simulation complementarily. In this study, additional hardening due to sinusoidal loading was carefully examined using SUS304 stainless steel, and the proposed model was applied to it. As a result, computer simulation based on this hybrid constitutive model can accurately describe the sinusoidal loading.