Compaction dynamics of a granular media under vertical tapping

We report new experimental results on granular compaction under consecutive vertical taps. The evolution of the mean volume fraction and of the mean potential energy of a granular packing presents a slow densification until a final steady-state, and is reminiscent to usual relaxation in glasses via...

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Bibliographic Details
Published in:Europhysics letters 2002, Vol.60, p.677-683
Main Authors: Philippe, P., Bideau, D.
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
Soft Condensed Matter
Statistical Mechanics
Online Access:Get full text
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Summary:We report new experimental results on granular compaction under consecutive vertical taps. The evolution of the mean volume fraction and of the mean potential energy of a granular packing presents a slow densification until a final steady-state, and is reminiscent to usual relaxation in glasses via a stretched exponential law. The intensity of the taps seems to rule the characteristic time of the relaxation according to an Arrhenius's type relation >. Finally, the analysis of the vertical volume fraction profile reveals an almost homogeneous densification in the packing.
ISSN:0295-5075
1286-4854