Footprints in sand:: The response of a granular material to local perturbations -: art. no. 035506

被引：206

作者：

Geng, JF ^{[1
]}

Howell, D

Longhi, E

Behringer, RP

Reydellet, G

Vanel, L

Clément, E

Luding, S

机构：

[1] Duke Univ, Dept Phys, Durham, NC 27708 USA

[2] Duke Univ, Ctr Nonlinear & Complex Syst, Durham, NC 27708 USA

[3] Univ Paris 06, F-75231 Paris, France

[4] Univ Stuttgart, ICAI, D-70569 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.87.035506

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally determine ensemble-averaged responses of granular packings to point forces, and we compare these results to recent models for force propagation in a granular material. We use 2D granular arrays consisting of photoelastic particles: either disks or pentagons, thus spanning the range from ordered to disordered packings. A key finding is that spatial ordering of the particles is a key factor in the force response. Ordered packings have a propagative component that does not occur in disordered packings.

引用

页码：35506 / 1

页数：4

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