A crack perpendicular to and terminating at a bimaterial interface

被引：14
作者：
Wang Tzuchiang
Per Ståhle
机构：
[1] Chinese Academy of Sciences,LNM, Institute of Mechanics
[2] Luleå University of Technology,Division of Solid Mechanics
来源：
Acta Mechanica Sinica | 1998年 / 14卷 / 1期
关键词：
interface; perpendicular crack; gerneralized stress intensity factor; stress;
D O I：
10.1007/BF02486828
中图分类号：
学科分类号：
摘要：
Using dislocation simulation approach, the basic equation for a finite crack perpendicular to and terminating at a bimaterial interface is formulated. A novel expansion method is proposed for solving the problem. The complete solution to the problem, including the explicit formulae for theT stresses ahead of the crack tip and the stress intensity factors are presented. The stress field characteristics are analysed in detail. It is found that normal stresses {ie27-1} and {ie27-2} ahead of the crack tip, are characterised byQ fields if the crack is within a stiff material and the parameters |pT| and |qT| are very small, whereQ is a generalised stress intensity factor for a crack normal to and terminating at the interface. If the crack is within a weak material, the normal stresses {ie27-3} and {ie27-4} are dominated by theQ field plusT stress.
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页码：27 / 36
页数：9
相关论文
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