FORCE FLUCTUATIONS IN BEAD PACKS

被引：705

作者：

LIU, CH

NAGEL, SR

SCHECTER, DA

COPPERSMITH, SN

MAJUMDAR, S

NARAYAN, O

WITTEN, TA

机构：

[1] EXXON RES & ENGN CO, ANNANDALE, NJ 08801 USA

[2] UNIV CHICAGO, JAMES FRANCK INST, CHICAGO, IL 60637 USA

[3] AT&T BELL LABS, MURRAY HILL, NJ 07974 USA

[4] YALE UNIV, DEPT PHYS, NEW HAVEN, CT 06511 USA

[5] UNIV CALIF SANTA CRUZ, DEPT PHYS, SANTA CRUZ, CA 95064 USA

来源：

SCIENCE | 1995年 / 269卷 / 5223期

关键词：

D O I：

10.1126/science.269.5223.513

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Experimental observations and numerical simulations of the large force inhomogeneities present in stationary bead packs are presented. Forces much larger than the mean occurred but were exponentially rare. An exactly soluble model reproduced many aspects of the experiments and simulations. In this model, the fluctuations in the force distribution arise because of variations in the contact angles and the constraints imposed by the force balance on each bead in the pile.

引用

页码：513 / 515

页数：3

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