压电材料渗透型反平面界面裂纹的奇异因子  

INTENSITY FACTORS OF ELECTRICALLY PERMEABLE INTERFACIAL CRACKS OF ANTIPLANE STRAIN PROBLEMS IN BONDED DISSIMILAR PIEZOELECTRIC MATERIALS

作　　者：刘新民[1] 侯密山[2] 

机构地区：[1]燕山大学,秦皇岛066004 [2]石油大学,东营257062

出　　处：《工程力学》2000年第2期18-22,共5页Engineering Mechanics

摘　　要：本文用复变函数解析延展原理，研究了集中载荷作用下的不同压电材料反平面应变 状态的电渗透型界面裂纹的耦合场：对单个裂纹，给出了封闭形式的复函数解和场强度因子。 结果表明，在裂尖处耦合场有（１／２）阶的奇异性。Coupling field for antiplane strain problems of the electrically permeable slit cracks between bonded dissimilar piezoelectric materials under concentrated loads is studied using complex function method. Solutions of the complex potentials in closed-form and the field intensity factors are given for a single crack. It is found that the order of singularity at the crack tip in the coupled field is (1/2).

关 键 词：压电材料 强度因子 反平面界面裂纹 奇异因子 

分 类 号：TM22[一般工业技术—材料科学与工程] TB390.1[电气工程—电工理论与新技术]