Abstract Accurate sheet metal simulation often requires advanced strain-path dependent material models, in order to predict the material response under complex loading conditions, including monotonic, reverse and orthogonal paths. More and more flexible models imply higher and higher costs in terms of parameter identification, computer implementation and simulation time, and robust comparison is often compromised by the inconsistent predictions of advanced models under monotonic loading. In this paper, a simple and general approach is proposed for the alteration of advanced hardening models in order to make them rigorously identical to each other under monotonic loading. This objective was reached without any drawback other than the addition of the corresponding equations. On the contrary, the flexibility and accuracy of the selected models was improved, and the parameter identification procedure became simpler, more accurate and more robust. Three material models of increasing complexity were selected to demonstrate the interest of this approach with respect to a complete set of characterisation experiments for a DP600 sheet steel.

中文翻译：

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在单调加载下具有严格相同预测的应变路径相关硬化模型

摘要 精确的钣金仿真通常需要先进的应变路径相关材料模型，以预测复杂载荷条件下的材料响应，包括单调、反向和正交路径。越来越灵活的模型意味着在参数识别、计算机实现和仿真时间方面的成本越来越高，而在单调加载下，先进模型的不一致预测往往会损害稳健的比较。在本文中，提出了一种简单而通用的方法来改变高级硬化模型，以使它们在单调加载下彼此严格相同。除了添加相应的方程之外，这个目标没有任何缺点。相反，提高了所选模型的灵活性和准确性，参数识别程序变得更简单、更准确和更稳健。选择了三个越来越复杂的材料模型，以证明这种方法对 DP600 钢板的全套表征实验的兴趣。