Stresses in silos: comparison between theoretical models and new experiments
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 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 rather severely test competing models.
Vanel
L
L.M.D.H., Universite Paris VI, 4 place Jussieu-case 86, 75005 Paris, France.
Claudin
P
Bouchaud
J
Cates
ME
Clement
E
Wittmer
JP