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

页码：37 / 44

页数：8

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