Finite element analysis of the stress-strain behavior of single-crystal tubes

摘要

In this paper, we investigate the anisotropic macroscopic behavior of single-crystal superalloy subjected to torsion loading. Two viscoplastic models are studied. One is a crystallographic approach based on Schmid law, the second one is phenomenologically built up. Both models are implemented into finite element codes. Their predictive ability is compared through the results delivered by the F. E. calculations of cylindrical specimens subjected to torsion. Results are also compared to the experiments.