Investigation on the correlation of mode II fracture toughness of sandstone with tensile strength

被引：42

作者：

Hua, Wen ^{[1
]}

Dong, Shiming ^{[1
]}

Fan, Yang ^{[1
]}

Pan, Xin ^{[1
]}

Wang, Qingyuan ^{[1
]}

机构：

[1] Sichuan Univ, Coll Architecture & Environm, Minist Educ, Key Lab Deep Underground Sci & Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

ENGINEERING FRACTURE MECHANICS | 2017年 / 184卷

基金：

中国国家自然科学基金;

关键词：

Mode II fracture toughness; Tensile strength; Correlation research; Centrally cracked Brazilian disc; BRAZILIAN DISC SPECIMEN; MIXED-MODE; BRITTLE-FRACTURE; SUGGESTED METHOD; LIMESTONE ROCK; T-STRESS;

D O I：

10.1016/j.engfracmech.2017.09.009

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A series of tests with centrally cracked Brazilian disc and un-cracked Brazilian disc specimens were conducted to investigate the relation between the mode II fracture toughness K-IIC and tensile strength sigma(t) of sandstone under different treatment conditions. The results indicated that there was a good linear relation between these two rock parameters. Further, this conclusion was also validated by theoretical analysis based on the generalized maximum tangential stress criterion. Moreover, an empirical formula K-IIC = 0.2159 sigma(t) was obtained using linear regression analysis, which can be confidently used to estimate the mode II fracture toughness with tensile strength of rocks. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：249 / 258

页数：10

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