Intermittencies in the compression process of a model granular medium

被引：27

作者：

Ngadi, A ^{[1
]}

Rajchenbach, J ^{[1
]}

机构：

[1] Univ Paris 06, Lab Milieux Desordonnees & Heterogenes, CNRS, URA 800, F-75252 Paris 05, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.80.273

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the force required by a bidimensional piling to be compressed are reported. This force is shown to exhibit sudden fluctuations of large amplitude which strongly deviate from the mean value. We determine the scaling laws followed by the mean force and by the fluctuations as a function of the grain diameter, the grain mass, the aspect ratio, and the container filling. The mechanism of fluctuations is identified, and the passage to the Mohr-Coulomb plasticity behavior is recognized in the limit of very large systems.

引用

页码：273 / 276

页数：4

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