An embedded mixed-mode crack in a functionally graded magnetoelectroelastic infinite medium

被引：19
|
作者：
Rekik, M. [1 ]
El-Borgi, S. [1 ]
Ounaies, Z. [2 ]
机构：
[1] Univ Carthage, Tunisia Polytech Sch, Appl Mech & Syst Res Lab, La Marsa 2078, Tunisia
[2] Penn State Univ, Dept Mech Engn, University Pk, PA 16802 USA
来源：
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2012年 / 49卷 / 05期
基金：
美国国家科学基金会;
关键词：
Functionally graded magneto electro elastic material (FGMEEM); Mixed-mode stress intensity factors; Embedded crack; Magnetoelectromechanical loads; Singular integral equations; ELECTRO-ELASTIC STRIP; BONDED SMART STRUCTURE; PIEZOELECTRIC/PIEZOMAGNETIC MATERIALS; FRACTURE-ANALYSIS; OPENING CRACK; SHEAR; INTERFACE; LAYER;
D O I：
10.1016/j.ijsolstr.2011.12.002
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper focuses on the study of the influence of a mixed-mode crack on the coupled response of a functionally graded magnetoelectroelastic material (FGMEEM). The crack is embedded at the center of a 2D infinite medium subjected to magnetoelectromechanical loads. The material is graded in the direction orthogonal to the crack plane and is modeled as a nonhomogeneous medium with anisotropic constitutive laws. Using Fourier transform, the resulting plane magnetoelectroelasticity equations are converted analytically into singular integral equations which are solved numerically to yield the crack-tip mode I and II stress intensity factors, the electric displacement intensity factors and the magnetic induction intensity factors. The main objective of this paper is to study the influence of material nonhomogeneity on the fields' intensity factors for the purpose of gaining better understanding on the behavior of graded magnetoelectroelastic materials. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：835 / 845
页数：11
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