Analysis of a moving crack in a functionally graded strip between two homogeneous layers

被引：36
作者：
Cheng, Zhanqi
Zhong, Zheng [1 ]
机构：
[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China
[2] Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2007年 / 49卷 / 09期
基金：
中国国家自然科学基金;
关键词：
functionally graded material; moving crack; dynamical stress intensity factors; fourier transformation; singular integral equation; FRACTURE-ANALYSIS; DYNAMIC FRACTURE; ELASTIC GRADIENT; ANTIPLANE SHEAR; PROPAGATION; INTERFACE; COMPOSITE; GROWTH;
D O I：
10.1016/j.ijmecsci.2007.01.003
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this paper a finite crack with constant length (Yoffe-type crack) propagating in a functionally graded strip with spatially varying elastic properties between two dissimilar homogeneous layers under in-plane loading was studied. By utilizing the Fourier transformation technique, the mixed boundary problem is reduced to a system of singular integral equations that are solved numerically. The influences of the geometric parameters, the graded parameter, the crack length and speed on the stress intensity factors are investigated. The numerical results show that the graded parameters, the thicknesses of the functionally graded strip and the two homogeneous layers, the crack size and speed have significant effects on the dynamic fracture behavior. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1038 / 1046
页数：9
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