A Zener-Stroh crack in a fiber-reinforced composite material

被引：14
|
作者：
Xiao, ZM [1 ]
Chen, BJ [1 ]
Fan, H [1 ]
机构：
[1] Nanyang Technol Univ, Sch Mech & Prod Engn, Singapore 639798, Singapore
来源：
MECHANICS OF MATERIALS | 2000年 / 32卷 / 10期
关键词：
crack; stress intensity factor; inclusion; interaction; self-consistent three-phase model; composite material;
D O I：
10.1016/S0167-6636(00)00021-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Zener-Stroh crack is formed by coalescing a dislocation pileup and therefore is a net dislocation loaded crack. In this paper, the interaction between a Zener-Stroch crack and surrounding cylindrical fibers in a fiber-reinforced composite material has been investigated. The crack is located in the matrix and near a fiber, while the influence of other fibers on the crack is considered through the three-phase composite cylinder model. Using the solution of stress field for a single dislocation in a three-phase cylinder as the Green's function, the crack is represented by a continuous distribution of dislocations. A set of singular integral equations are thus formulated and solved numerically. The stress intensity factor (SIF) on the crack tip due to crack-inclusions interaction is calculated. The results show that the volume concentration of fibers has non-negligible influence on the SIF of the crack. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：593 / 606
页数：14
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