Mechanical transitional behavior of binary mixtures via DEM: Effect of differences in contact-type friction coefficients

被引：99

作者：

Gong, Jian ^{[1
]}

Liu, Jun ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2017年 / 85卷

基金：

中国国家自然科学基金;

关键词：

Granular mixtures; Drained biaxial tests; Peak shear strength; Thresholds; Anisotropic analysis; Contact types; SHEAR-STRENGTH; PARTICLE-SHAPE; STEADY-STATE; VOID RATIOS; SIMULATION; PACKING; MODEL; FINES; SAND;

D O I：

10.1016/j.compgeo.2016.12.009

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This report presents a numerical investigation of the shear behavior of binary mixtures via a two-dimensional discrete element method. The effect of the coarse particle content on the peak shear strength of mixtures is investigated for different contact-type friction coefficients. A detailed analysis on the ani-sotropies enables us to understand the microscopic mechanisms that result in the dependency of the peak shear strengths on the coarse particle content. The contributions of different contact types to the peak shear strength are quantified. Lastly, the inter-particles structures are examined when the binary mixtures become coarse-particle-supported structures. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1 / 14

页数：14

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