Determination of crack initiation direction from a bi-material notch based on the strain energy density concept

被引：20
|
作者：
Klusak, J. [1 ]
Knesl, Z. [1 ]
机构：
[1] Acad Sci Czech Republic, Inst Phys Mat, Brno 61662, Czech Republic
来源：
COMPUTATIONAL MATERIALS SCIENCE | 2007年 / 39卷 / 01期
关键词：
bi-material notch; crack initiation direction; strain energy density;
D O I：
10.1016/j.commatsci.2006.02.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The article presents a procedure for the determination of the direction of crack initiation from a bi-material notch. The approach is based on the knowledge of the strain energy density distribution. First, the strain energy density for a bi-material notch is expressed and then the directions of the crack initiation are evaluated. It is shown that for estimation of the crack initiation direction two existing singular terms have to be taken into account. The results are presented for a specific notch geometry for the varying ratio of Young's moduli E-1/E-2 of both materials and the varying ratio of generalized stress intensity factors H-2/H-1. (c) 2006 Elsevier B.V. All rights reserved.
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页码：214 / 218
页数：5
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