Abstract Present work is aimed at validation of existing popular cyclic plasticity material models and proposing an improved model for SA 333 Gr. 6 material. Recently reported in-house axial-torsion tests have been used for validation. Present analyses considered Chaboche’s non-linear kinematic hardening rule, Tanaka’s fourth order tensor and Meggiolaro’s non-proportionality considerations. The Chaboche-Tanaka-Meggiolaro model resulted in comparable assessments for stabilized loops under uniaxial, proportional and few non-proportional conditions. However, the axial stress response under most of non-proportional conditions was significantly under-predicted. The proposed modification in dynamic recovery term of kinematic hardening rule resulted in improved assessments for nearly all strain paths.

中文翻译：

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提出一种改进的循环塑性材料模型用于评估低 C-Mn 钢的多轴响应

摘要 目前的工作旨在验证现有流行的循环塑性材料模型并提出 SA 333 Gr 的改进模型。6 材料。最近报道的内部轴向扭转测试已用于验证。目前的分析考虑了 Chaboche 的非线性运动学硬化规则、Tanaka 的四阶张量和 Meggiolaro 的非比例性考虑。Chaboche-Tanaka-Meggiolaro 模型在单轴、比例和少数非比例条件下对稳定回路进行了可比较的评估。然而，大多数非比例条件下的轴向应力响应明显低于预测。运动硬化规则的动态恢复项的拟议修改导致对几乎所有应变路径的评估得到改进。