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Titel:
Shaking a Box of Sand
Author(s):
Peter F. Stadler,
Anita Mehta,
Jean-Marc Luck
Abstract:
We present a simple model of a vibrated box of sand, and discuss its
dynamics in terms of two parameters reflecting static and dynamic disorder
respectively. The fluidised, intermediate and frozen (`glassy') dynamical
regimes are extensively probed by analysing the response of the packing
fraction to steady, as well as cyclic, shaking, and indicators of the onset
of a `glass transition' are analysed. In the `glassy' regime, our model is
exactly solvable, and allows for the qualitative description of ageing
phenomena in terms of two characteristic lengths; predictions are also made
about the influence of grain shape anisotropy on ageing behaviour.
PACS: 87.10.+e, 87.23.Kg
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