A strain energy density criterion for the initiation of edge debonding

被引：10
|
作者：
Martin, Eric [1 ]
Leguillon, Dominique [2 ]
机构：
[1] Univ Bordeaux, CNRS, Lab Composites Thermostructuraux, UMR 5801, F-33600 Pessac, France
[2] Univ Paris 06, Sorbonne Univ, CNRS UMR 7190, Inst Jean le Rond dAlembert, F-75005 Paris, France
来源：
THEORETICAL AND APPLIED FRACTURE MECHANICS | 2015年 / 79卷
关键词：
Crack initiation; Coupled criterion; Strain energy density; Brittle fracture; FAILURE; CRACK; COMPONENTS; STRENGTH; VICINITY; VOLUME;
D O I：
10.1016/j.tafmec.2015.06.011
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Material or geometrical discontinuities within a structure induce a localized stress concentration which may initiate a crack leading to catastrophic failure in brittle materials. To assess crack initiation in the vicinity of a V-notch, a criterion based on the strain energy density (SED) averaged over a volume surrounding the notch tip is an attractive approach. It is demonstrated that this criterion can also be used to predict crack initiation along an interface. The precise definition of the control volume is obtained with the help of a coupled criterion which relies on finite fracture mechanics. (C) 2015 Elsevier Ltd. All rights reserved.
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页码：58 / 61
页数：4
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