Accession Number:

ADA160921

Title:

Asymptotic Fields in Steady Crack Growth with Linear Strain-Hardening,

Descriptive Note:

Corporate Author:

HARVARD UNIV CAMBRIDGE MA DIV OF APPLIED SCIENCES

Personal Author(s):

Report Date:

1985-08-01

Pagination or Media Count:

62.0

Abstract:

The asymptotic stress and velocity fields of a crack propagating steadily and quasi-statically into an elastic-plastic material are presented. The material is characterised by J sub 2 flow theory with linear strain-hardening. The possibility of reloading on the crack flanks is taken into account. The cases of anti-plane mode III, plane strain modes I and II, and plane stress modes I and II are considered. Numerical results are given for the strength of the singularity and for the distribution of the stress and velocity fields in the plastic loading, elastic unloading and plastic reloading regions, as functions of the strain-hardening parameter. An attempt is made to make a connection with the perfectly-plastic solutions in the limit of vanishing strain-hardening. Keywords ordinary differential equations fracture mechanics deformation numerical integration. Author

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE