Simulation of rock dynamic failure using discontinuous numerical approach

被引：29
作者：
Zhang, Xiu-Li [1 ]
Jiao, Yu-Yong [2 ]
Ma, Jiang-Feng [1 ]
机构：
[1] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
[2] China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China
来源：
COMPUTERS AND GEOTECHNICS | 2018年 / 96卷
基金：
中国国家自然科学基金;
关键词：
An improved DDA method; Rock failure; Brazilian disc; SHPB test; Projectile penetration; HIGH-VELOCITY IMPACT; DAMAGE; FRACTURE; STRENGTH; CONCRETE; MODEL;
D O I：
10.1016/j.compgeo.2017.10.001
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this paper, an improved DDA method proposed by the authors is used to simulate the rock failure process under dynamic loading, and several SHPB tests on Brazilian discs with different angle pre-cracks are conducted for verification. The simulated main crack paths of different specimens agree well with the observations in the SHPB tests. In addition, the perforation process of a hard projectile into rock is also simulated, and some heavily discontinuous phenomena in impact failure are captured. It shows that the improved DDA method is able to simulate the failure behavior of rock under dynamic loading.
引用
收藏
页码：160 / 166
页数：7
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