A thermodynamically consistent theory of stress-gradient plasticity
Materials Science
2020-12-30 v3
Abstract
As an extension to strain-gradient models of size-dependent plastic behaviour, this work proposes a model for a stress-gradient theory. The model is distinguished from earlier works on the topic by its being embedded in a thermodynamically consistent framework. The development is carried out in the context of single-crystal plasticity, and draws on thermodynamically consistent models for single-crystal conventional and strain-gradient plasticity. The model is explored numerically using the example of torsion of a thin wire comprising a face centred cubic crystal, and its behaviour compared with that based on a recent disequilibrium density model of size-dependent plasticity.
Cite
@article{arxiv.2007.15355,
title = {A thermodynamically consistent theory of stress-gradient plasticity},
author = {B. D. Reddy and P. Steinmann and A. Kergassner},
journal= {arXiv preprint arXiv:2007.15355},
year = {2020}
}