T-stress for a centrally cracked Brazilian disk under confining pressure

被引：49
|
作者：
Hua, Wen [1 ]
Li, Yifan [1 ]
Dong, Shiming [1 ]
Li, Nianbin [1 ]
Wang, Qingyuan [1 ]
机构：
[1] Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China
来源：
ENGINEERING FRACTURE MECHANICS | 2015年 / 149卷
基金：
中国国家自然科学基金;
关键词：
Centrally cracked Brazilian disk; Confining pressure; Weight function; T-stress; II FRACTURE-TOUGHNESS; MODE-I; INTENSITY FACTORS; CIRCULAR DISKS; LIMESTONE ROCK; TEMPERATURE; SPECIMEN; GEOMETRY;
D O I：
10.1016/j.engfracmech.2015.09.048
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
An analytical formula for calculating the T-stress in a centrally cracked Brazilian disk under both diametric forces and confining pressure, is presented by using the weight function method. It is very accurate for a alpha <= 0.95 with 100 terms, and can be expediently used for arbitrary crack lengths and loading angles. In addition, the effect of confining pressure on the T-stress is also investigated, and it is shown that the T-stress increases with increase of confining pressure. There is a significant effect of confining pressure on the T-stress for a centrally cracked Brazilian disk with a large crack length and loading angle. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：37 / 44
页数：8
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