Dynamic anti-plane shear of a cracked piezoelectric ceramic

被引：58
|
作者：
Narita, F [1 ]
Shindo, Y [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 9808579, Japan
来源：
THEORETICAL AND APPLIED FRACTURE MECHANICS | 1998年 / 29卷 / 03期
关键词：
elasticity; fracture mechanics; antiplane shear waves; piezoelectric material; dynamic stress intensity factor; dynamic energy release rate; integral transforms;
D O I：
10.1016/S0167-8442(98)00028-7
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The dynamic theory of antiplane piezoelectricity is applied to solve the problem of a line crack subjected to horizontally polarized shear waves in an arbitrary direction. The problem is formulated by means of integral transforms and reduced to the solution of a Fredholm integral equation of the second kind. The path-independent integral G is extended here to include piezoelectric effects, and is evaluated at the crack tip to obtain the dynamic energy release rate. Numerical calculations are carried out for the dynamic stress intensity factor and energy release rate. The material is piezoelectric ceramic. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码：169 / 180
页数：12
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