Finite Element Analysis on Plane Stress Crack Growth in a Power-Law Hardening Material

摘要

Aim To determine numerically the field characteristics in the vicinity at the tip of a plane crack growing steadily in a power-law hardening material. Methods Based on the Euler mode and small-scale yield assumption, the numerical results were given by nonlinear finite element analysis. Results The numerical results of the shape of the active plastic zone, the angular distribution of stresseses and crack tip opening displacement (CTOD) in the vicinity at the tip of the steadily growing crack are determined. Conclusion The comparison between the numerical results given by the present work and those given by analytic asymptotic analysis shows that the present work reached a very high accuracy.