Compaction dynamics of a granular media under vertical tapping

Details Compaction dynamics of a granular media under vertical tapping Compaction dynamics of a granular media under vertical tapping

2002-10-14

arxiv.org/abs/cond-mat/0210297v1

Physics

Condensed Matter

Statistical Mechanics

7 pages, 4 figures, to appear in Europhysics Letters

Scientific paper

10.1209/epl/i2002-00362-7

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.

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