Abstract The present paper aims to show the ability of the extended overstress subloading surface EOSS theory to model the rate-dependency of metallic materials subjected to different loading conditions. The numerical results were carried out by means of Finite Elements FE simulations reproducing pure creep, stress relaxation, monotonic tensile and cyclic loading conditions. A particular emphasis is given to show the model response under quasi-static and high strain rates loading conditions describing the evolution of the main variables and investigating the convergence rate of the implicit integration scheme. The validation of the EOSS model is carried out against experimental tests, found in the literature, on a lead-free solder material and a SS316L stainless steel. The numerical results are in good agreement with the experimental data proving the ability of the EOSS model to catch a realistic material description.

中文翻译：

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高/低循环应变率加载条件下的过应力弹粘塑性模型：第二部分 – 数值分析

摘要 本文旨在展示扩展过应力子加载表面 EOSS 理论模拟金属材料在不同加载条件下的速率依赖性的能力。数值结果是通过有限元有限元模拟再现纯蠕变、应力松弛、单调拉伸和循环加载条件进行的。特别强调了在准静态和高应变率加载条件下的模型响应，描述了主要变量的演变并研究了隐式积分方案的收敛速度。EOSS 模型的验证是根据文献中的实验测试在无铅焊料材料和 SS316L 不锈钢上进行的。