STRESS INTENSITY FACTORS FOR SEMICIRCULAR SPECIMENS UNDER 3-POINT BENDING

被引：292

作者：

LIM, IL

JOHNSTON, IW

CHOI, SK

机构：

[1] MONASH UNIV, DEPT CIVIL ENGN, CLAYTON, VIC 3168, AUSTRALIA

[2] CSIRO, DIV GEOMECHAN, SYDNEY, VIC 3149, AUSTRALIA

来源：

ENGINEERING FRACTURE MECHANICS | 1993年 / 44卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/0013-7944(93)90030-V

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The semi-circular specimen under three-point bending technique is a versatile, cost-effective and reliable method for determining the mixed-mode (I and II) fracture toughness envelope of rocks. However, existing numerical results on the stress intensity factor variation with specimen geometry are very limited. This study extends previous numerical work to cover a wide range of possible specimen geometries of experimental interest. From this, a number of observations relevant to the practical use of this technique are discussed. Analytical functions are then provided as an approximation to the mode I variation of the stress intensity factors.

引用

页码：363 / 382

页数：20

共 18 条

[1]

Chan S. K., 1970, Engineering Fracture Mechanics, V2, P1, DOI 10.1016/0013-7944(70)90026-3

[2] NEW SPECIMEN FOR FRACTURE-TOUGHNESS DETERMINATION FOR ROCK AND OTHER MATERIALS [J].