2004/03/01 by Fernando Alonso-Marroquín, F. Alonso-Marroquin, S. Luding +4 · 1 citation
Engineering · Environmental Science · Physics and Astronomy · #Geotechnical Engineering and Soil Mechanics #Granular flow and fluidized beds #Landslides and related hazards #cond-mat.dis-nn #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physreve.71.051304
published as Phys. Rev. E 71, 051304 (2005) · Submitted to PRE
arxiv created 2004/03/01 · openalex publication_date 2005/05/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the effect of the anisotropy induced by loading on the elastoplastic response of a two dimensional discrete element model granular material. The anisotropy of the contact network leads to a breakdown of the linear isotropic elasticity. We report on a linear dependence of the Young moduli and Poisson ratios on the fabric coefficients, measuring the anisotropy of the contact network. The resulting nonassociated plastic flow rule and the linear relationship between dilatancy and stress ratio are discussed in terms of several existing models. We propose a paradigm for understanding soil plasticity, based on the correlation between the plastic flow rule and the induced anisotropy on the subnetwork of sliding contacts.