A moving crack propagating in a functionally graded magnetoelectroelastic strip under different crack face conditions

被引：12

作者：

Fu, Jiawei ^{[1
,2
]}

Hu, Kegiang ^{[2
]}

Chen, Zengtao ^{[2
]}

Chen, Longmiao ^{[1
]}

Qian, Linfang ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Univ New Brunswick, Dept Mech Engn, Fredericton, NB E3B 5A3, Canada

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2013年 / 66卷

关键词：

Crack kinking; Moving crack; Functionally graded magnetoelctroelastic strip; Impermeable crack; Permeable crack; Field intensity factor; MODE-III CRACK; FRACTURE-MECHANICS; INTERFACE; KINKING; BEHAVIOR; GROWTH;

D O I：

10.1016/j.tafmec.2014.01.007

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

An anti-plane moving crack problem in a functionally graded magnetoelectroelastic strip under magneto-electrically impermeable or permeable conditions is investigated. Fourier cosine transforms are applied to reduce the mixed-boundary-value problem to dual integral equations and then Fredholm integral equations of the second kind. The equations can be solved numerically and field intensity factors are determined. The effects of the geometric size of the composite, the functionally graded parameter and the crack moving velocity on the field intensity factors are analyzed. Also the crack kinking phenomena under impermeable and permeable conditions are discussed. The results show that the coupled magneto-electrical field has great effects on the stress intensity factor and the probable kinking direction will be affected by the moving velocity, the thickness of the strip as well as crack surface magneto-electrical boundary condition remarkably. (C) 2014 The Authors. Published by Elsevier Ltd.

引用

页码：16 / 25

页数：10

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