Influence of the intermediate principal stress and principal stress direction on the mechanical behavior of cohesionless soils using the discrete element method

被引：20
|
作者：
Li, Bo [1 ,2 ]
Chen, Liangliang [3 ]
Gutierrez, Marte [4 ]
机构：
[1] Wenzhou Univ, Dept Civil Engn, Oujiang Coll, Wenzhou, Zhejiang, Peoples R China
[2] Wenzhou Univ, Key Lab Engn & Technol Soft Soil Fdn & Reclamat, Wenzhou, Zhejiang, Peoples R China
[3] Wenzhou Univ, Coll Architecture & Civil Engn, Wenzhou, Zhejiang, Peoples R China
[4] Colorado Sch Mines, Dept Civil & Environm Engn, Golden, CO 80401 USA
来源：
COMPUTERS AND GEOTECHNICS | 2017年 / 86卷
基金：
浙江省自然科学基金;
关键词：
Anisotropy; b-value; Non-coaxial behavior; Principal stress rotation; Hollow cylinder test; Strain localization; GRANULAR-MATERIALS; FAILURE; SAND; DEFORMATION; STRENGTH; ROTATION; TESTS;
D O I：
10.1016/j.compgeo.2017.01.004
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this paper, the Discrete Element Method (DEM) is employed to numerically explore the response of hollow cylinder specimens of granular soils under complex stress paths. Two series of numerical tests are conducted to clarify the effects of the principal stress direction a and the intermediate principal stress through the b-value on the mechanical response of granular materials. The effects of a and b-value on the non-coaxiality of the principal stress and the principal plastic strain increment directions are investigated. It is observed that b-value and a significantly affect the non-coaxial behavior of granular materials. Finally, the results are discussed and compared with those obtained from physical laboratory tests. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：52 / 66
页数：15
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