Criticality and scaling relations in a sheared granular material

被引：37

作者：

Hatano, Takahiro ^{[1
]}

Otsuki, Michio

Sasa, Shin-ichi

机构：

[1] Univ Tokyo, Earthquake Res Inst, Tokyo 1130032, Japan

[2] Univ Tokyo, Dept Pure & Appl Sci, Tokyo 1538902, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2007年 / 76卷 / 02期

关键词：

granular flow; non-Newtonian fluid flow;

D O I：

10.1143/JPSJ.76.023001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate a rheological property of a dense granular material under shear. By a numerical experiment of the system with constant volume, we find a critical volume fraction at which the shear stress and the pressure behave as power-law functions of the shear strain rate. We also present a simple scaling argument that determines the power-law exponents. Using these results, we interpret a power-law behavior observed in the system under constant pressure.

引用

页数：4

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