title: Stresses in silos: comparison between theoretical models and new experiments
abstract: 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.
authors.affiliation: L.M.D.H., Universite Paris VI, 4 place Jussieu-case 86, 75005 Paris, France.
authors.initials: L
authors.lastname: Vanel
authors.initials: P
authors.lastname: Claudin
authors.initials: J
authors.lastname: Bouchaud
authors.initials: ME
authors.lastname: Cates
authors.initials: E
authors.lastname: Clement
authors.initials: JP
authors.lastname: Wittmer