A numerical study of the jerky crack growth in elastoplastic materials with localized plasticity

TL;DR

This paper introduces a numerical model for quasi-static crack growth in elastoplastic materials, demonstrating that crack propagation occurs intermittently with jump characteristics influenced by material properties.

Contribution

It provides a novel numerical implementation for modeling crack growth with localized plasticity in elastoplastic materials, highlighting the intermittent nature of crack advancement.

Findings

Crack growth is intermittent with jumps.

Jump characteristics depend on material properties.

Numerical evidence supports the model's predictions.

Abstract

We present a numerical implementation of a model of quasi-static crack growth in linearly elastic-perfectly plastic materials. We assume that the displacement is antiplane, and that the cracks and the plastic slips are localized on a prescribed path. We provide numerical evidence of the fact that the crack growth is intermittent, with jump characteristics that depend on the material properties.