Interaction of Electric Charges in a Piezoelectric With Rigid External Cracks

HU Yuan-tai; LI Guo-qing; JIANG Shu-nong; HU Hong-ping; YANG Jia-shi

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Article Navigation > Applied Mathematics and Mechanics > 2005 > 26(8): 911-920

HU Yuan-tai, LI Guo-qing, JIANG Shu-nong, HU Hong-ping, YANG Jia-shi. Interaction of Electric Charges in a Piezoelectric With Rigid External Cracks[J]. Applied Mathematics and Mechanics, 2005, 26(8): 911-920.

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Interaction of Electric Charges in a Piezoelectric With Rigid External Cracks

1.
Institute of Mechanics and Sensing Technology, Central South University, Changsha 410083, P. R. China;

Received Date: 2004-08-05
Rev Recd Date: 2005-04-11
Publish Date: 2005-08-15

Abstract

Abstract

Using Stroh's formalism 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 due to the piezoelectricity and the distributed bo undary polarization charges was discussed at first. Interactions between two singularities with free charge (s) located in aregion 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 electr omechanical fields in piezoelectric media when these singularities move closely with each other and therefore cannot be over looked 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.
- external crack,
- intensity factor,
- Green’s function,
- Coulomb force

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References(15)

References

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