Discrete element modeling of crushable sands considering realistic particle shape effect

被引：124
作者：
Fu, Ru [1 ]
Hu, Xinli [1 ]
Zhou, Bo [2 ]
机构：
[1] China Univ Geosci, Fac Engn, Wuhan, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Civil Engn & Mech, Wuhan, Hubei, Peoples R China
来源：
COMPUTERS AND GEOTECHNICS | 2017年 / 91卷
基金：
美国国家科学基金会;
关键词：
Particle crushing; Realistic particle shape; X-ray micro-computed tomography; Spherical harmonic analysis; Discrete element method; X-RAY TOMOGRAPHY; PROBABILISTIC APPROACH; COMPUTED-TOMOGRAPHY; GRANULAR MATERIAL; BREAKAGE; BEHAVIOR; SIMULATION; GENERATION; FRACTURE; TESTS;
D O I：
10.1016/j.compgeo.2017.07.016
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This study proposed a novel approach for generating crushable agglomerates with realistic particle shapes in discrete element modeling (DEM). The morphologies of sand particles were obtained by Xray micro-computed tomography scanning and image processing. Based on the particle surface reconstructed by spherical harmonic analysis, the crushable agglomerates with realistic particle shapes can be generated in DEM simulations. The results of single particle crushing tests showed that particle shapes significantly influence the fracture patterns and crushing strengths of sand particles. Furthermore, two one-dimensional compression tests were conducted to investigate the particle shape effect on micro and macro-mechanical behaviors of crushable sands. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：179 / 191
页数：13
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