Moving crack for functionally grated material in an infinite length strip under antiplane shear

被引：44
|
作者：
Bi, XS
Cheng, J
Chen, XL
机构：
[1] Harbin Inst Technol, Dept Astronaut & Mech, Harbin 150001, Peoples R China
[2] Heilongjiang Inst Sci & Technol, Elementary Dept, Harbin 150027, Peoples R China
来源：
THEORETICAL AND APPLIED FRACTURE MECHANICS | 2003年 / 39卷 / 01期
关键词：
functionally grated material; moving crack; integral transforms; dual-integral equation; strain energy density factor;
D O I：
10.1016/S0167-8442(02)00140-4
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Considered is a Yoffe crack in an infinite strip of functionally grated material (FGM) subjected to antiplane shear. The shear moduli in two directions of FGM are assumed to be of exponential form. The dynamic stress intensity factor and strain energy density factor at the crack tip are obtained by using integral transforms and dual-integral equations. The numerical results show that the decrease of the strain energy density factor varies with the shear moduli gradient, and the increase of the strain energy density factor varies with the increase of the moving crack speed. The ratio of shear moduli in material vertical orientation has a great influence on the strain energy density factor. (C) 2003 Elsevier Science Ltd. All rights reserved.
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页码：89 / 97
页数：9
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