3-DIMENSIONAL EIGENFUNCTION ANALYSIS OF A CRACK IN A PIEZOELECTRIC MATERIAL

被引:251
作者
SOSA, HA [1 ]
PAK, YE [1 ]
机构
[1] GRUMMAN CORP RES CTR,BETHPAGE,NY 11714
关键词
8;
D O I
10.1016/0020-7683(90)90090-I
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A three-dimensional analysis of a semi-infinite crack embedded in a transversely isotropic piezoelectric material was performed by means of the eigenfunction expansions method. The results show the characteristic 1 √r singular behavior of the stress tensor in the vicinity of the crack. A similar behavior is also revealed for the electric field. In addition the study demonstrates that coupling (or decoupling) of the mechanical and electrical variables is a function of the distance to the crack tip as well as of the crack orientation. © 1989.
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页码:1 / 15
页数:15
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