A PHENOMENOLOGICAL APPROACH TO RELAXATION IN POWDERS

被引：35

作者：

MEHTA, A

EDWARDS, SF

机构：

[1] Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE England, Madingley Road

来源：

PHYSICA A | 1990年 / 168卷 / 02期

关键词：

D O I：

10.1016/0378-4371(90)90026-O

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This work is a phenomenological attempt to understand the dynamic response of a granular pile to vibration. We model the effect of vibration on a granular pile as random noise in its interior, and write down a form for the relaxation of the compactivity parameter X. The compactivity, which characterises the packing of the pile, is shown to settle to a value that reflects a balance between the amplitude of the noise and a restoring force such as gravity. © 1990.

引用

页码：714 / 722

页数：9

共 14 条

[1]

Brown R. L., 1966, PRINCIPLES POWDER ME

[2] SUBHARMONIC INSTABILITIES AND DEFECTS IN A GRANULAR LAYER UNDER VERTICAL VIBRATIONS [J].

DOUADY, S ;

FAUVE, S ;

LAROCHE, C .

EUROPHYSICS LETTERS, 1989, 8 (07) :621-627

[3]

DUKE TAJ, 1990, IN PRESS EUROPHYS LE

[4] THEORY OF POWDERS [J].

EDWARDS, SF ;

OAKESHOTT, RBS .

PHYSICA A, 1989, 157 (03) :1080-1090

[5] DISLOCATIONS IN AMORPHOUS MATERIALS [J].

EDWARDS, SF ;

MEHTA, A .

JOURNAL DE PHYSIQUE, 1989, 50 (18) :2489-2503

[6]

EDWARDS SF, 1988, P E FERMI SCH PHYSIC

[7]

EDWARDS SF, 1990, DISORDER CONDENSED M

[8] INSTABILITY IN A SAND HEAP [J].

EVESQUE, P ;

RAJCHENBACH, J .

PHYSICAL REVIEW LETTERS, 1989, 62 (01) :44-46

[9] RELAXATION AT THE ANGLE OF REPOSE [J].

JAEGER, HM ;

LIU, CH ;

NAGEL, SR .

PHYSICAL REVIEW LETTERS, 1989, 62 (01) :40-43

[10] FRICTION IN GRANULAR FLOWS [J].

JAEGER, HM ;

LIU, CH ;

NAGEL, SR ;

WITTEN, TA .

EUROPHYSICS LETTERS, 1990, 11 (07) :619-624

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