ABSTRACT The AISI 304 stainless steel has largely been used in industry owing to its good formability characteristics. Therefore, the use of proper material parameters is essential for a successful numerical simulation of forming operations. Within this framework, this work addresses a parameter identification strategy using strategies based on multiple mechanical tests – a multi-test optimization scheme. The technique is used to determine isotropic hardening parameters of the AISI 304 steel using tensile tests of specimens of different geometries. The proposed method makes possible to obtain a representative set of material parameters taking into account the material response up to macroscopic failure. The study shows that the technique provides a minimum improvement of 30.43% in the global error function when comparing against single test results.

中文翻译：

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AISI 304 不锈钢非弹性参数的识别：多测试优化策略

摘要 AISI 304 不锈钢由于其良好的成型特性而在工业中得到广泛应用。因此，使用适当的材料参数对于成功的成形操作数值模拟至关重要。在这个框架内，这项工作使用基于多个机械测试的策略来解决参数识别策略——多测试优化方案。该技术用于通过对不同几何形状的试样进行拉伸试验来确定 AISI 304 钢的各向同性硬化参数。考虑到材料对宏观失效的响应，所提出的方法使得获得一组具有代表性的材料参数成为可能。研究表明，该技术提供了 30 的最低改进。