DEM study on the effect of particle breakage on the macro- and micro-behavior of rockfill sheared along different stress paths

被引：64
作者：
Xu, Ming [1 ]
Hong, Juntian [1 ]
Song, Erxiang [1 ]
机构：
[1] Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
来源：
COMPUTERS AND GEOTECHNICS | 2017年 / 89卷
基金：
中国国家自然科学基金;
关键词：
Discrete element method; Rockfill; Stress path; Particle breakage; Anisotropy; GRANULAR-MATERIALS; INDUCED ANISOTROPY; NUMERICAL-MODEL; STRENGTH; DEFORMATION; PRESSURE; BALLAST; SOILS;
D O I：
10.1016/j.compgeo.2017.04.012
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The behavior of crushable rockfill sheared along different stress paths is studied using the discrete element method. Rockfill particles are modeled as breakable agglomerates, and reasonable consistency is found between the predicted and experimental results. The simulation highlights the influence of agglomerate breakage on both the macro- and micro-behavior of the assembly. The evolution of both the number and mode of agglomerate breakage during shearing is significantly influenced by the confining pressure, deviator stress ratio, and loading direction. The relationship between the deviator stress ratio on the macro-scale and the deviator fabric on the micro-scale along different stress paths is explored. (C) 2017 Published by Elsevier Ltd.
引用
收藏
页码：113 / 127
页数：15
相关论文
共 65 条
[41]   Discrete element modelling of soil particle fracture [J].
McDowell, GR ;
Harireche, O .
GEOTECHNIQUE, 2002, 52 (02) :131-135
[42]  
Mcdowell GR, 2016, GRANULAR MATTER, V18
[43]  
McDowell GRM, 2000, GEOTECHNIQUE, V50, P315
[44]  
Mitchell J.K., 2005, FUNDAMENTAL SOIL BEH, V3rd
[45]   A COMBINED FINITE-DISCRETE ELEMENT METHOD IN TRANSIENT DYNAMICS OF FRACTURING SOLIDS [J].
MUNJIZA, A ;
OWEN, DRJ ;
BICANIC, N .
ENGINEERING COMPUTATIONS, 1995, 12 (02) :145-174
[46]  
Munjiza A., 2004, The combined finite-discrete element method, DOI DOI 10.1002/0470020180
[47]   Microscopic particle crushing of sand subjected to high pressure one-dimensional compression [J].
Nakata, Y ;
Hyodo, M ;
Hyde, AFL ;
Kato, Y ;
Murata, H .
SOILS AND FOUNDATIONS, 2001, 41 (01) :69-82
[48]  
Nakata Y, 1999, GEOTECHNIQUE, V49, P567
[49]   Macro- and micro-behaviors of granular materials under different sample preparation methods and stress paths [J].
Ng, TT .
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2004, 41 (21) :5871-5884
[50]  
Oda M., 1985, SOILS FOUND, V25, P85, DOI [10.3208/sandf1972.25.3_85, DOI 10.3208/SANDF1972.25.3_85]
1234567