AN INTERFACE INCLUSION BETWEEN TWO DISSIMILAR PIEZOELECTRIC MATERIALS

作     者：高存法 樊蔚勋 GAO Cun-fa;FAN Wei-xun

作者机构：北京大学力学与工程科学系，北京100871 南京航空航天大学飞行器系，南京210016 

出 版 物：《应用数学和力学》 (Applied Mathematics and Mechanics)

年 卷 期：2001年第22卷第1期

页      面：85-92页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：theAeronautics&AstronauticsScienceFoundationofChina ( 98B5 2 0 1 7) 

主　　题：压电材料 界面夹杂 复势 尖端场 Stroh公式 裂纹 压电介质 

摘      要：The generalized two_dimensional problem of a dielectric rigid line inclusion, at the 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.