Simulation of the dependence of the bulk-stress-strain relations of granular materials on the particle shape

被引：10

作者：

El Shourbagy, Salah A. M. ^{[1
]}

Morita, Shinichi ^{[1
]}

Matuttis, Hans-Georg ^{[1
]}

机构：

[1] Univ Electrocommun, Dept Mech Engn & Intelligent Syst, Chofu, Tokyo 1828585, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2006年 / 75卷 / 10期

关键词：

granular media; non-spherical particles; discrete element method; stress-strain-relation; biaxial compression;

D O I：

10.1143/JPSJ.75.104602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the effect of particle shape and interparticle friction on the stress-strain-relation using the discrete element method (DEM) in two dimensions. Elongated particles show a significantly higher shear strength than non-elongated particles. The relative maximum which is characteristic for experimental stress-strain curves of granular materials is found only for elongated particles with finite Coulomb friction, which indicates that the particle elongation is an important parameter in the statistical physics of granular materials. An earlier simulation result from another group which showed a maximum for non-elongated particles could be identified to be due to the formation of a shear band.

引用

页数：10

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