New fracture criterion for brittle materials under compression

被引：0

作者：

Zhu, Zhe-Ming ^{[1
]}

Wang, Yuan ^{[1
]}

Zhou, Zhang-Tao ^{[1
]}

Li, Bi-Xiong ^{[1
]}

Xie, He-Ping ^{[1
]}

机构：

[1] School of Architecture and Environment, Sichuan Univ., Chengdu 610065, China

来源：

Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition) | 2008年 / 40卷 / 05期

关键词：

Crack propagation - Brittle fracture - Stress intensity factors - Brittleness;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, the cracks situated along a straight line were investigated, and using complex stress functions, the stress intensity factors were formulated. For the two cases of only two collinear cracks and a single crack inside an infinite plate, the exact solutions of stress intensity factors were presented. Finally, by using the two collinear crack model and a single crack model, a new fracture criterion for brittle materials under compression was developed based on the traditional fracture criterion. In some special cases, this new crack propagation criterion can be simplified, and the results were very interesting, especially, for the case of materials without pre-existing macrocracks, the new crack propagation criterion was identical with the well known Coulomb-Mohr criterion.

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页码：13 / 21

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