Scattering of Love waves by a surface-breaking crack in piezoelectric layered media

被引：51
作者：
Narita, F [1 ]
Shindo, Y [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 98077, Japan
来源：
JSME INTERNATIONAL JOURNAL SERIES A-SOLID MECHANICS AND MATERIAL ENGINEERING | 1998年 / 41卷 / 01期
关键词：
elasticity; fracture mechanics; Love wave; piezoelectric material; layered material; dynamic stress intensity factor; (J)over-cap-integral; dynamic energy release rate; stress singularities; integral transforms;
D O I：
10.1299/jsmea.41.40
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Based on the dynamic theory of linear piezoelectricity, we investigate the scattering of Love waves by a surface-breaking crack in a layered piezoelectric solid. The piezoelectric layer is perfectly bonded to a half-space of a different elastic solid and the crack is normal to the free surface. Both cases of a partially broken layer and a completely broken layer are studied. By the use of Fourier transform techniques, the mixed boundary value problem is reduced to a singular integral equation. The singular integral equation is solved numerically to determine the dynamic stress intensity factor and the dynamic energy release rate as a function of a dimensionless frequency for various ratios of crack depth to layer thickness, and the results are presented in graphical form.
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页码：40 / 48
页数：9
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