文献类型：期刊文献

英文题名：Interaction between a completely coated semi-infinite crack and a screw dislocation

作者：Wang, Xu[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 ABT6G 1H9, Canada

年份：2019

卷号：70

期号：4

外文期刊名：ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK

收录：;EI(收录号：20192807174979);WOS:【SCI-EXPANDED(收录号:WOS:000474498600001)】；

基金：This work is supported by the National Natural Science Foundation of China (Grant No. 11272121) and through a Discovery Grant from the Natural Sciences and Engineering Research Council of Canada (Grant No. RGPIN - 2017 - 03716115112).

语种：英文

外文关键词：Coated mode III crack; Screw dislocation; Stress intensity factor; Image force; Conformal mapping; Analytic continuation

摘要：Using complex variable methods, we derive analytic solutions to the problem of a screw dislocation interacting with a completely coated semi-infinite mode III crack. The crack and the parabolic coating-matrix interface have a common focus. The screw dislocation can be located either in the surrounding matrix or in the coating itself. Explicit expressions for the resultant stress intensity factor at the crack tip and the image force acting on the screw dislocation are obtained. Several special cases are discussed in detail to demonstrate the solutions and also to validate their correctness.