Pressure screening and fluctuations at the bottom of a granular column

Details Pressure screening and fluctuations at the bottom of a granular column Pressure screening and fluctuations at the bottom of a granular column

1999-04-07

arxiv.org/abs/cond-mat/9904090v1

Physics

Condensed Matter

Soft Condensed Matter

17 pages, Latex, 8 eps figures, to appear in the European Physical Journal B (1999)

Scientific paper

10.1007/s100510050965

We report sets of precise and reproducible measurements on the static pressure at the bottom of a granular column. We make a quantitative analysis of the pressure saturation when the column height is increased. We evidence a great sensitivity of the measurements with the global packing fraction and the eventual presence of shear bands at the boundaries. We also show the limit of the classical Janssen model and discuss these experimental results under the scope of recently proposed theoretical frameworks.

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