Dynamic Anti-plane Behaviors of a Semi-infinite piezoelectric Medium with a Circular Cavity and a Crack near the Surface

被引：0

作者：

Song, Tianshu ^{[1
]}

Li, Dong ^{[1
]}

Wang, Xinwang ^{[1
]}

Dong, Shengli ^{[2
]}

机构：

[1] Harbin Engn Univ, Sch Civil Engn, Harbin 150001, Peoples R China

[2] Heilongjiang Engn Coll, Dept Civil Engn, Harbin 150001, Peoples R China

来源：

ADVANCES IN FRACTURE AND DAMAGE MECHANICS VII | 2008年 / 385-387卷

基金：

黑龙江省自然科学基金;

关键词：

Semi-infinite piezoelectric medium; Green's function; Dynamic stress concentration factor; Dynamic stress intensity factor; Interacting crack and circular cavity near the surface;

D O I：

10.4028/www.scientific.net/KEM.385-387.389

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Dynamic interaction is investigated theoretically between a circular cavity and a crack near the surface in a semi-infinite piezoelectric medium subjected to time-harmonic incident anti-plane shearing in this paper. The formulations are based on the method of complex variable and Green's function. Dynamic stress concentration factors at the edge of the circular cavity and dynamic stress intensity factors at the crack tip are obtained by solving boundary value problems with the method of orthogonal function expansion. The calculating results are plotted to show how the frequencies and the orientation of incident wave, piezoelectric characteristic parameters of the material and the structural geometries influence upon the dynamic stress concentration factor (DSCF) and dynamic stress intensity factor (DSIF).

引用

页码：389 / +

页数：2

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