点击次数：

论文类型：期刊论文

发表时间：2011-04-01

发表刊物：COMPUTERS & STRUCTURES

收录刊物：SCIE、EI

卷号：89

期号：7-8

页面范围：631-645

ISSN号：0045-7949

关键字：Symplectic expansion; Magnetoelectroelastic material; Intensity factor; Electromagnetic permeable; Electro-magneto-mechanical loading

摘要：Fracture mechanism is pertinent to minimize the catastrophic failures and optimize the structural design. An exact treatment on the electromagnetic permeable crack problems in a magnetoelectroelastic medium is presented by establishing a Hamiltonian system in terms of the symplectic eigenfunctions. The coefficients of the series are determined from the lateral boundary conditions at the crack surfaces and the outer boundary conditions along the geometric domain. Analytical formulations of intensity factors and distributions of dual variables are obtained by the symplectic expansion method. The various intensity factors are directly related to the first few terms of the non-zero eigenvalue solutions. (C) 2011 Elsevier Ltd All rights reserved.