Chaboche model has gained prominent utilization in numerical simulation on cyclic behaviors of metal structure. However, the calibration of its material parameter may produce considerable cost. A simplified calibration way is of great importance to ease its application. To this end, a re-evaluation on chaboche model material parameters and simulated elastic-plastic laws was conducted regarding various steel grades. Futhermore, the characterisitcs of isotropic softening was coupled with the present model hardening rule. The kinematic rule was correlated with cumulative plastic strain. The modified model was then calibrated and validated base upon the coupon test result on 41 batches of steels, whose yield stress ranges from 100 MPa to 890 MPa. The calibrated material parameter were then correlated with corresponding monotonic mechanical properties. Accordingly, a simplified calibration procedure, based upon which the material parameters of modifed Chaboche model can be fastly estimated by yield strength and yield ratio, was constructed. As for low yield point steels, mild steels and high strength steels, this calibration method can ease the calibration of modified Chaboche model considerably.

Chaboche模型在金属结构循环行为的数值模拟中得到了广泛的应用。但是，对其材料参数的校准可能会产生可观的成本。简化校准方法对于简化其应用非常重要。为此，针对各种钢种对chaboche模型材料参数和模拟的弹塑性定律进行了重新评估。此外，各向同性软化的特征与本模型的硬化规则相结合。运动规则与累积塑性应变相关。然后，基于对41批屈服应力范围为100 MPa至890 MPa的钢的试样试验结果，对修改后的模型进行校准和验证。然后将校准的材料参数与相应的单调机械性能相关联。因此，构建了简化的校准程序，在此基础上，可以通过屈服强度和屈服比快速估算修改后的Chaboche模型的材料参数。对于低屈服点钢，低碳钢和高强度钢，此校准方法可以大大简化修改后的Chaboche模型的校准。