Abstract

The purpose of this work is to study the effect of anisotropic plasticity on the micro-deep drawing of the 304 stainless steel foils through a combination of experimental testing and numerical modeling. A phenomenological anisotropic model, with the Yld2004-18p yield function, is used to model the anisotropic plasticity deformation of the material. Based on the miniature tensile experimental data and Voce's hardening law, the coefficients in the Yld2004-18p function were calibrated. The FE modelling was implemented using ABAQUS to simulate the micro-deep drawing experiments. The wall thickness and height of the cylindrical cup obtained by the simulation have shown to be reasonably close to the experimental values, and the distribution of ears is the same as the experimental results. It has shown that the Yld2004-18p anisotropic yield function can accurately describe the anisotropic behavior of 304 stainless steel foils during the micro-deep drawing process.

中文翻译：

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304 箔片微拉深过程中的各向异性塑性变形：实验和数值研究

摘要

这项工作的目的是通过实验测试和数值模拟相结合的方式研究各向异性塑性对 304 不锈钢箔微拉深的影响。使用具有 Yld2004-18p 屈服函数的唯象各向异性模型来模拟材料的各向异性塑性变形。根据微型拉伸实验数据和Voce硬化定律，对Yld2004-18p函数中的系数进行了标定。使用ABAQUS进行有限元建模来模拟微拉深实验。模拟得到的圆柱形杯的壁厚和高度与实验值相当接近，并且耳朵的分布与实验结果相同。结果表明，Yld2004-18p各向异性屈服函数可以准确描述304不锈钢箔在微拉深过程中的各向异性行为。