Plane stress dynamic fields near a propagating crack-tip in a power-law material期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Plane stress dynamic fields near a propagating crack-tip in a power-law material

Authors:	Zhang Zimao Gao Yuchen

Affiliation:	(1) Harbin Shipbuilding Engineering Institute, Harbon, China;(2) Present address: Department of Mechanics, Harbin Institute of Technology, Harbin, China

Abstract:	Based on the plastic-dynamic equations, the asymptotic behaviour of the near-tip fields for a plane stress tensile crack propagating in a power-law material has been studied in this paper. It is shown that the stress and strain singularities are, respectively, of the order $left( {ln frac{A}{r}} right)^{frac{1}{{n - 1}}}$ and $left( {ln frac{A}{r}} right)^{frac{n}{{n - 1}}}$ , whereA is a constant which is related to the size of plastic region,r is the distance to the crack tip,n is the power-law exponent. Projects sponsored by the National Science Foundation.

Keywords:	power-law material strain singularity singularity-factor elastic region plastic region
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