Green's functions of an interfacial crack between two dissimilar piezoelectric media

被引：32

作者：

Gao, CF ^{[1
]}

Wang, MZ ^{[1
]}

机构：

[1] Peking Univ, Dept Mech & Engn Sci, Beijing 100871, Peoples R China

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2001年 / 38卷 / 30-31期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

piezoelectric; interface crack; Green's function;

D O I：

10.1016/S0020-7683(00)00341-3

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Based on the permeable crack model, the Green's function of an interfacial crack between two dissimilar piezoelectric media is first presented by means of the Stroh formalism. Then, the electric field inside the crack and the fundamental solution of field intensity factor near the crack tips are obtained in an explicit closed-form. As special examples, several Green's functions are given for the cases of a crack in a homogeneous piezoelectric material, an interfacial crack between two dissimilar purely-elastic media, and a bimaterial of piezoelectric materials, respectively. It is shown in the general case that all the field variables near the crack-tips are singular and oscillatory, and such is the case for the electric field inside the crack when approaching to the crack-tips from on the crack faces. In addition, the relation between the field intensity factor vector of an impermeable crack and that of a permeable crack is established in the general cases. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：5323 / 5334

页数：12

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