AN INTERFACE INCLUSION BETWEEN TWO DISSIMILAR PIEZOELECTRIC MATERIALS

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AN INTERFACE INCLUSION BETWEEN TWO DISSIMILAR PIEZOELECTRIC MATERIALS

The generalized two- dimensional problem of a dielectric rigid line inclusion, atthe interface between two dissimilar piezoelectric media subjected to piecewise uniform loads at infinity, is studied by means of the Stroh theory. The problem was reduced to a Hilbert problem, and then closed-form expressions were obtained, respectively, for the complex potentials in piezoelectric media, the electric field inside the inclusion and the tip fields near the inclusion. It is shown that in the media, all field variables near the inclusion-tip show square root singularity and oscillatory singularity, the intensity of which is dependent on the material constants and the strains at infinity. In addition, it is found that the electric field inside the inclusion is singular and oscillatory too, when approaching the inclusion-tips from inside the inclusion.

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作 者: 高存法 樊蔚勋  
作者单位:高存法(Department of Mechanics and Engineering Science, Peking University, Beijing 100871, P R China)
/P [} P,?d4Zu0樊蔚勋(Department of Aircraft, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, P R China) 
刊 名:应用数学和力学(英文版)  EI SCI
英文刊名:APPLIED MATHEMATICS AND MECHANICS(ENGLISH EDITION) 
年,卷(期):2001 22(1) 
分类号:O346.1 
关键词:piezoelectric material   interface inclusion   complex potential   tip field   Stroh formula  
机标关键词:PIEZOELECTRIC MATERIALSpiezoelectric mediaelectric fieldrigid line inclusionmaterial constantssquare root 
基金项目:中国航空科学基金 
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