A new cyclic hardening model is proposed based on combined experimental and numerical analyses to simulate the deformation of a cracked structure under large amplitude cyclic loading. In the experiment conducted herein, compact tension specimen tests made of TP304 stainless steel were subjected to large-amplitude cyclic loading. Then, finite element (FE) analysis was performed using the ABAQUS debond option to develop a cyclic hardening model. In the proposed cyclic hardening law, isotropic hardening was calculated in the first loading cycle. To assess the unloading of the first cycle, a Chaboche combined hardening model was used. The model results agreed well with the experimental displacement data. The effects of hardening in the first loading cycle on the yield surface and equivalent plastic strains in the subsequent cycles are presented as well.

基于实验和数值分析相结合，提出了一种新的循环硬化模型，以模拟大振幅循环载荷下裂纹结构的变形。在这里进行的实验中，对由 TP304 不锈钢制成的紧凑拉伸试样进行了大振幅循环加载。然后，使用 ABAQUS 脱粘选项进行有限元 (FE) 分析以开发循环硬化模型。在建议的循环硬化定律中，各向同性硬化是在第一个加载循环中计算的。为了评估第一个循环的卸载，使用了 Chaboche 组合硬化模型。模型结果与实验位移数据吻合良好。