On the dynamic crack propagation in an interphase with spatially varying elastic properties under inplane loading

被引:48
作者
Jiang, LY [1 ]
Wang, XD [1 ]
机构
[1] Univ Alberta, Dept Mech Engn, Edmonton, AB T6G 2G8, Canada
关键词
crack propagation; functionally graded materials; interphase; strain energy release rate; stress intensity factor;
D O I
10.1023/A:1015529931715
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This article provides a comprehensive theoretical investigation on a finite crack with constant length (Yoffe type crack) propagating in an interfacial layer with spatially varying elastic properties under inplane loading. The analytical formulations are developed using Fourier transforms and solving the resulting singular integral equations in terms of the opening and sliding displacements of the crack. The dynamic stress intensity factors and energy release rate are analyzed to study the dynamic fracture property of this inherent mixed mode crack problem. Numerical examples are provided to show the effects of the material properties, the thickness of the interfacial layer, the crack position and speed upon the dynamic fracture behaviour, and the singularity transition between the current crack and the corresponding interfacial crack for thin interphase.
引用
收藏
页码:225 / 244
页数:20
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