Dynamic anti-plane characteristic on an infinite piezoelectric medium with a movable rigid cylindrical inclusion |
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Authors: | Song Tian-shu Sun Li-li Yu Zhen-dong |
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Institution: | (1) School of Civil Engineering, Harbin Engineering University, 150001 Harbin, China |
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Abstract: | Scattering and dynamic stress concentrations of time harmonic SH-wave in an infinite elastic piezoelectric medium with a movable rigid cylindrical inclusion are studied in this paper with the help of complex variable and wave function expansion method. The relations that a movable rigid cylindrical inclusion depends on intensity of incident wave and electric field are revealed. The expressions of dynamic stress at the edge of the inclusion are obtained. Numerical calculations are made with different wave numbers and different piezoelectric characteristic parameters. The calculating results show that dynamic stress concentrations at the edge of the inclusion have linear dependence on the incident electric field. And dynamic analyses are very important for an infinite piezoelectric medium with a movable rigid cylindrical inclusion at larger piezoelectric characteristic parameters. |
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Keywords: | piezoelectric medium movable rigid cylindrical inclusion scattering of SH-wave dynamic stress concentration |
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