SINGULAR BEHAVIORS OF INTERFACIAL CRACKS IN 2D MAGNETOELECTROELASTIC BIMATERIALS  

作　　者：Cuiying Fan Youhe Zhou Han Wang Minghao Zhao 

机构地区：[1]Key Laboratory of Mechanics on Disaster and Environment in Western China, the Ministry of Education of China, and Department of Mechanics and Engineering Science, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China [2]School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China

出　　处：《Acta Mechanica Solida Sinica》2009年第3期232-239,共8页固体力学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.10572131);the Program for New Century Excellent Talents in University of HeNan Province (HANCET)

摘　　要：The singular characteristics of stress, electric displacement and magnetic induction fields near the tip of impermeable interracial cracks in two-dimensional magnetoelectroelastic bimaterials are studied using the generalized Stroh formalism. Two types of singularities are obtained： one is the oscillating singularity 1/2±iε, the other is the non-oscillating singularity 1/2±κ. It is found that the non-zero parameters ε and κ cannot coexist for one transversely isotropic MEE bimaterial, a similar result is obtained for transversely isotropic piezoelectric bimaterials.The singular characteristics of stress, electric displacement and magnetic induction fields near the tip of impermeable interracial cracks in two-dimensional magnetoelectroelastic bimaterials are studied using the generalized Stroh formalism. Two types of singularities are obtained： one is the oscillating singularity 1/2±iε, the other is the non-oscillating singularity 1/2±κ. It is found that the non-zero parameters ε and κ cannot coexist for one transversely isotropic MEE bimaterial, a similar result is obtained for transversely isotropic piezoelectric bimaterials.

关 键 词：generalized Stroh formalism magnetoelectroelastic bimaterial interfacial crack singularity index 

分 类 号：O346.1[理学—固体力学] TQ032[理学—力学]