Eur. Phys. J. B 11, 525-533 (1999)
https://doi.org/10.1007/s100510050965

Pressure screening and fluctuations at the bottom of a granular column

Laboratoire des Milieux Désordonnés et Hétérogènes, (UMR 7603 CNRS) Boîte 86, Université Pierre et Marie Curie, 4 Place Jussieu, 75005 Paris, France

Received: 7 September 1998
Revised: 28 January 1999
Published online: 15 October 1999

Abstract

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.