INTERACTION OF ELECTRIC CHARGES IN A PIEZOELECTRIC WITH RIGID EXTERNAL CRACKS

INTERACTION OF ELECTRIC CHARGES IN A PIEZOELECTRIC WITH RIGID EXTERNAL CRACKS

Using Stroh＇s formalism the simple explicit expressions of Green＇s functions for a 2D piezoelectric body with two semi-infinite fixed conductor cracks subjected to a generalized line force were given. The Coulomb force acting on the free line charge aroused by the piezoelectricity and the distribute...

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Veröffentlicht in:Applied mathematics and mechanics 2005-08, Vol.26 (8), p.996-1006
1. Verfasser: HU Yuan-tai（胡太平） LI Guo-qing（李国清） JIANG Shu-nong（蒋树农） HU Hong-ping（胡洪平） YANG Jia-shi（杨嘉实）
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Green函数
刚性材料
压电负荷
断裂理论
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container_title Applied mathematics and mechanics
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creator HU Yuan-tai（胡太平） LI Guo-qing（李国清） JIANG Shu-nong（蒋树农） HU Hong-ping（胡洪平） YANG Jia-shi（杨嘉实）
description Using Stroh＇s formalism the simple explicit expressions of Green＇s functions for a 2D piezoelectric body with two semi-infinite fixed conductor cracks subjected to a generalized line force were given. The Coulomb force acting on the free line charge aroused by the piezoelectricity and the distributed boundary polarization charges was discussed at first. Interactions between two singularities with free charge （s） located in a region with external cracks were studied, too. The numerical results show that the Coulomb force for two or more singularities with one free charge at least will have much influence on the electromechanical fields in piezoelectric media when these singularities move closely with each other and therefore cannot be overlooked again. The solutions obtained are valid not only for plane and anti-plane problems but also for coupled problems between in-plane and out-of-plane deformations.
doi_str_mv 10.1007/bf02466412
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subjects Green函数
刚性材料
压电负荷
断裂理论
title INTERACTION OF ELECTRIC CHARGES IN A PIEZOELECTRIC WITH RIGID EXTERNAL CRACKS
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