期刊
ENGINEERING FRACTURE MECHANICS
卷 82, 期 -, 页码 1-8出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2011.11.001
关键词
Rock fracture toughness specimen; Cracked chevron notched Brazilian disc; Minimum dimensionless stress intensity factor; Straight through crack assumption; Upper bound requirement
类别
资金
- National Natural Science Foundation [51179115]
- State Key Laboratory for Geo-Mechanics and Deep Underground Engineering [SKLGDUEK1020]
The minimum dimensionless stress intensity factor of cracked chevron notched Brazilian disc specimen is the coefficient in the crucial formula for calculating the fracture toughness using the method suggested by the International Society for Rock Mechanics. This coefficient can be conveniently obtained by the analytical method based on the straight through crack assumption proposed by Munz et al. (1980) [17], so it is very easy to determine the upper bound on the coefficient for any cracked chevron notched Brazilian disc specimen. Furthermore, the upper bound is explained by comparing the load bearing capacity of a cracked chevron notched Brazilian disc with that of the counterpart cracked straight through Brazilian disc, this comparison identifies that the upper bound concept is inherent with sound physical significance, so violation of this upper bound for the stress intensity factor is unreasonable. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据