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arXiv 1707.08962cond-mat.mtrl-sci
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晶体应力分布对虚两相微结构定义的敏感性

Sensitivity of Crystal Stress Distributions to the Definition of Virtual Two-Phase Microstructures

Andrew C. Poshadel, Michael Gharghouri, Paul R. Dawson

摘要:

系统地研究了模拟输入对两相微结构中计算应力分布的敏感性。这项研究支持了双相不锈钢屈服的开始和传播的相关调查。在研究中考虑的是单晶体的弹性和塑性行为的本构模型参数的识别和包括虚拟样品的实例化中的主导相和晶粒形态的重要性。使用有限元公式计算的行为进行评估,对宏观应力-应变行为的实验数据和晶格应变数据测量中子衍射在原位加载。

英文摘要:

A systematic study of the sensitivities of simulation input on the computed stress distributions in two-phase microstructures is presented. The study supports a related investigation of the initiation and propagation of yielding in duplex stainless steel. Considered in the study are the identification of constitutive model parameters for the single-crystal elastic and plastic behaviors and the importance of including dominant phase and grain morphologies in the instantiation of virtual samples. Behaviors computed using a finite element formulation are evaluated against experimental data for the macroscopic stress-strain behavior and against lattice strain data measured by neutron diffraction under in situ loading.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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