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- Title
A perturbation solution for a crack in a power-law material under gross yielding.
- Authors
Chen, G. X; Wang, C. H; Rose, L. R. F
- Abstract
Abstract In order to develop an analytical method for quantifying the plastic-blunting behaviour of a short crack embedded in a notch plastic zone, the perturbation solution of He and Hutchinson is extended to include the effect of strain gradient. An edge-cracked plate subjected to a linearly varying remote strain is considered in this work to simulate the plastic deformation associated with a small crack at a notch root. The strain hardening of the material is assumed to obey a power-law. Comparison with finite-element (FE) computations demonstrates that this perturbation solution provides accurate values for the crack-tip opening displacement (CTOD) under gross-yielding conditions for a range of hardening parameters.
- Subjects
PERTURBATION theory; FINITE element method
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2002, Vol 25, Issue 2, p231
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1046/j.1460-2695.2002.09898.x