Theoretical modeling of crack-tip plasticity by the distributed dislocation technique

The crack growth behavior is influenced greatly by the crack-tip plasticity. Most of the existing two-dimensional (2D) theoretical models of crack-tip plasticity are appropriate only for elastic perfectly-plastic materials under simple mode load, which limits the application range. This paper presents a theoretical model based on the distributed dislocation technique (DDT) that can be used at mixed loads with bilinear strain-hardening and...