Interaction of a screw dislocation with a parabolic cavity and a semi-infinite crack

被引：2
|
作者：
Wang, Xu [1 ]
Yang, Ping [1 ]
Schiavone, Peter [2 ]
机构：
[1] East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China
[2] Univ Alberta, Dept Mech Engn, 10-203 Donadeo Innovat Ctr Engn, Edmonton, AB, Canada
来源：
MATHEMATICS AND MECHANICS OF SOLIDS | 2020年 / 25卷 / 10期
基金：
中国国家自然科学基金; 加拿大自然科学与工程研究理事会;
关键词：
Crack; parabolic cavity; screw dislocation; image force; stress intensity factor; generalized stress intensity factor; NUCLEATION; EMISSION; FORCE;
D O I：
10.1177/1081286520914698
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We derive an analytic solution to the problem of a screw dislocation interacting with a parabolic cavity and a semi-infinite sharp crack using conformal mapping techniques and the method of images. Closed-form expressions for the image force acting on the screw dislocation, the mode III stress intensity factor at the crack tip and the generalized mode III stress intensity factor for the parabolic cavity are obtained. The correctness of the solution is validated by comparison with existing solutions in the literature.
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页码：1896 / 1903
页数：8
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