title: Elastic medium confined in a column versus the Janssen experiment.
abstract: We compute the stresses in an elastic medium confined in a vertical column, when the material is at the Coulomb threshold everywhere at the walls. Simulations are performed in 2 dimensions using a spring lattice, and in 3 dimensions, using the Finite Element Method. The results are compared to the Janssen model and to experimental results for a granular material. The necessity to consider elastic anisotropy to render qualitatively the experimental findings is discussed.
authors.affiliation: Laboratoire des Matériaux et Structures du Génie Civil, (UMR 113 LCPC-ENPC-CNRS), Institut Navier 2, allée Kepler, 77420 Champs sur Marne, France. ovarlez@lcpc.fr
authors.forename: G
authors.initials: G
authors.lastname: Ovarlez
authors.forename: E
authors.initials: E
authors.lastname: Clément