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.
@article{arxiv.1707.08962,
title = {Sensitivity of Crystal Stress Distributions to the Definition of Virtual Two-Phase Microstructures},
author = {Andrew C. Poshadel and Michael Gharghouri and Paul R. Dawson},
journal= {arXiv preprint arXiv:1707.08962},
year = {2017}
}
Comments
31 pages; 17 figures.arXiv admin note: text overlap with arXiv:1707.06857