Eur. Phys. J. E 6, 169-179 (2001)
Stress response function of a granular layer: Quantitative comparison between experiments and isotropic elasticityD. Serero1, G. Reydellet1, P. Claudin1, É. Clément1 and D. Levine2
1 Laboratoire des Milieux Désordonnés et Hétérogènes (UMR 7603 du CNRS), 4 place Jussieu, case 86, 75252 Paris Cedex 05, France
2 Technion-Israel Institute of Technology, Physics Department, 32000 Haifa, Israel
(Received 3 August 2001)
We measured the vertical pressure response function of a layer of sand submitted to a localized normal force at its surface. We found that this response profile depends on the way the layer has been prepared: all profiles show a single centered peak whose width scales with the thickness of the layer, but a dense packing gives a wider peak than a loose one. We calculate the prediction of isotropic elastic theory in the presence of a bottom boundary and compare it to the data. We found that the theory gives the right scaling and the correct qualitative shape, but fails to really fit the data.
46.25.-y - Static elasticity.
45.70.Cc - Static sandpiles; granular compaction.
83.80.Fg - Granular solids.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2001