Micromechanics of wing crack propagation for different flaw properties

被引：63

作者：

Duriez, J. ^{[1
,2
]}

Scholtes, L. ^{[3
]}

Donze, F. -V. ^{[1
,2
]}

机构：

[1] Univ Grenoble Alpes, 3SR, F-38000 Grenoble, France

[2] CNRS, 3SR, F-38000 Grenoble, France

[3] Univ Lorraine, CNRS, CREGU, GeoRessources, F-54500 Vandoeuvre Les Nancy, France

来源：

ENGINEERING FRACTURE MECHANICS | 2016年 / 153卷

关键词：

Rock; Discrete Element Method; Mixed mode fracture; BONDED-PARTICLE MODEL; JOINTED ROCK MASS; BRITTLE-FRACTURE; TENSILE-STRENGTH; NUMERICAL-MODEL; DISCRETE; BEHAVIOR; FAILURE; COMPRESSION; COALESCENCE;

D O I：

10.1016/j.engfracmech.2015.12.034

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The Discrete Element Method is used to study crack propagation in intact rock from pre-existing flaws of different natures. Damage mechanisms occurring during open and closed cracks propagation are analyzed at the local scale using an innovative micromechanical investigation. Different micromechanisms are captured, due to the development of either tensile or deviatoric states of stress in the vicinity of the flaw, which are shown to be dependent on the flaw properties. In turn, crack propagation patterns, as strength, are greatly affected by the mechanical and geometrical characteristics of the initial flaw. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：378 / 398

页数：21

共 56 条

[21] The synthetic rock mass approach for jointed rock mass modelling [J].