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arXiv · 1707.08962

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

Andrew C. Poshadel·Michael Gharghouri·Paul R. Dawson
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Abstract

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.

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Andrew C. Poshadel, Michael Gharghouri, Paul R. Dawson. 2017-07-27. Sensitivity of Crystal Stress Distributions to the Definition of Virtual Two-Phase Microstructures. https://arxiv.org/abs/1707.08962

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