Quantitative evaluation of the effect of irregularly shaped particles in sheared granular assemblies

被引：53

作者：

Matsushima, Takashi ^{[1
]}

Chang, Ching S. ^{[2
]}

机构：

[1] Univ Tsukuba, Dept Engn Mech & Energy, Tsukuba, Ibaraki 3058573, Japan

[2] Univ Massachusetts, Dept Civil Engn, Amherst, MA 01003 USA

来源：

GRANULAR MATTER | 2011年 / 13卷 / 03期

关键词：

Particle shape effect; Shear strength; Discrete element method (DEM); EFFECTIVE ELASTIC-MODULI; SIMULATION; PACKINGS;

D O I：

10.1007/s10035-011-0263-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Assemblies of irregularly shaped particles exhibit higher shear strengths than assemblies of circular particles. We performed a series of 2D discrete element simulations to demonstrate that this particle shape effect is related to the induced moment and the additional dilation at the contacts between particles. We proposed a mechanically based particle shape index that is closely related to such contact behavior. A simple structural model is also investigated to clarify the micromechanical role of the particle shape.

引用

页码：269 / 276

页数：8

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