A phenomenological approach to relaxation in powders

Anita Mehta and S.F. Edwards

Physica A: Statistical Mechanics and its Applications, 1990, vol. 168, issue 2, 714-722

Abstract: 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.

Date: 1990
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:168:y:1990:i:2:p:714-722

DOI: 10.1016/0378-4371(90)90026-O

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