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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2001, Vol. 2 Issue (2): 146-151    DOI: 10.1631/jzus.2001.0146
Science & Engineering     
A PENNY-SHAPED CRACK IN AN INFINITE PIEZOELECTRIC BODY UNDER ANTISYMMETRIC POINT LOADS
HOU Peng-fei, DING Hao-jiang, GUAN Fu-ling
Centre for Spatial Structures,College of Architectural Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Geotechnical Enginnering, College of Architectural Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  In this study, Fabrikant (1989, 1991)\'s new results in potential theory were used to obtain the exact and complete solution for the problem of a penny-shaped crack in an infinite transversely isotropic piezoelectric body subjected to antisymmetric point loads (point charges and normal point forces); then the complete solution for the problem of one-sided loading of a penny-shaped crack was obtained by the superposition of the symmetric loading solution in Chen and Shioya (1999) and the antisymmetric one presented here; and then the reciprocity theorem of piezoelectric media was used to deal with the problem of interaction between arbitrarily located point forces and a point charge with a penny-shaped crack and obtained the exact expressions of the crack faces\' normal displacement in terms of elementary functions and some non-singular integrals; and finally obtained the normal displacement of the positive and negative faces of the crack under many loading cases as shown in figures for an infinite PZT-4 piezoelectric ceramic body weakened by a penny-shaped crack.

Key words： transversely isotropic piezoelectric body      penny-shaped crack      point force      point charge     
Received: 28 May 2000     
CLC:  O343.2  
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DING Hao-jiang
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HOU Peng-fei, DING Hao-jiang, GUAN Fu-ling. A PENNY-SHAPED CRACK IN AN INFINITE PIEZOELECTRIC BODY UNDER ANTISYMMETRIC POINT LOADS. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2001, 2(2): 146-151.

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