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Granular Pressure and the Thickness of a Layer Jamming on a Rough Incline

Christophe Josserand·Pierre-Yves Lagrée·Daniel Lhuillier
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Abstract

Dense granular media have a compaction between the random loose and random close packings. For these dense media the concept of a granular pressure depending on compaction is not unanimously accepted because they are often in a "frozen" state which prevents them to explore all their possible microstates, a necessary condition for defining a pressure and a compressibility unambiguously. While periodic tapping or cyclic fluidization have already being used for that exploration, we here suggest that a succession of flowing states with velocities slowly decreasing down to zero can also be used for that purpose. And we propose to deduce the pressure in \emph{dense and flowing} granular media from experiments measuring the thickness of the granular layer that remains on a rough incline just after the flow has stopped.

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Christophe Josserand, Pierre-Yves Lagrée, Daniel Lhuillier. 2005-06-06. Granular Pressure and the Thickness of a Layer Jamming on a Rough Incline. https://doi.org/10.1209/epl%2Fi2005-10398-1

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