Aspects of weakening in granular assemblies

2010/05/18 by Philipp Welker, Welker, Philipp, Sean McNamara +1
Engineering · Environmental Science · Physics and Astronomy · #Adhesion, Friction, and Surface Interactions #FOS: Physical sciences #Granular flow and fluidized beds #Landslides and related hazards #Other Condensed Matter (cond-mat.other) #Soft Condensed Matter (cond-mat.soft) #cond-mat.other #cond-mat.soft

paper · pdf · doi:10.48550/arxiv.1005.3205

arxiv created 2010/05/18 · openalex publication_date 2010/05/18 · arxiv updated 2010/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

We study numerical simulations of large (N~10⁴) two-dimensional quasi-static granular assemblies subjected to a slowly increasing deviator stress. We report some peculiarities in the behavior of these packings that have not yet been adressed. The number of sliding contacts is not necessarily related to stability: first the number of sliding contacts rises linearly and smoothly with the applied stress. Then, at approximately half the peak stress, the increase slows down, a plateau develops, and a decrease follows.

Citations

• A discrete numerical model for granular assemblies
• Ratcheting of Granular Materials
• Role of anisotropy in the elastoplastic response of a polygonal packing

Related

• Granular matter instability: A structural rigidity point of view
• Frictional weakening induced by cohesion: the numerical case of cohesive granular failures
• Stress propagation in locally loaded packings of disks and pentagons
• Stress Propagation in Two Dimensional Frictional Granular Matter
• Stress propagation in granular media: Breaking of any constitutive state equation relating local stresses together by a change of boundary conditions