Stresses in silos: Comparison between theoretical models and new experiments

Details Stresses in silos: Comparison between theoretical models and new experiments Stresses in silos: Comparison between theoretical models and new experiments

1999-04-07

arxiv.org/abs/cond-mat/9904094v2

Physics

Condensed Matter

4 pages, 2 figures, final version to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.84.1439

We present precise and reproducible mean pressure measurements at the bottom of a cylindrical granular column. If a constant overload is added, the pressure is linear in overload and nonmonotonic in the column height. The results are {\em quantitatively} consistent with a local, linear relation between stress components, as was recently proposed by some of us. They contradict the simplest classical (Janssen) approximation, and may pose a rather severe test of competing models.

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