Static Friction Phenomena in Granular Materials: Coulomb Law vs. Particle Geometry

Abstract

The static as well as the dynamic behaviour of granular material are determined by dynamic {\it and} static friction. There are well known methods to include static friction in molecular dynamics simulations using scarcely understood forces. We propose an Ansatz based on the geometrical shape of nonspherical particles which does not involve an explicit expression for static friction. It is shown that the simulations based on this model are close to experimental results.

11 pages, Revtex, HLRZ-33/93

Cited by in corpus (15)

• A model for collisions in granular gases
• Power law velocity fluctuations due to inelastic collisions in numerically simulated vibrated bed of powder}
• Friction vs Texture at the Approach of a Granular Avalanche
• Simulation of rotating drum experiments using non-circular particles
• Ratchet-Induced Segregation and Transport of Non-Spherical Grains
• Effects of Friction and Disorder on the Quasi-Static Response of Granular Solids to a Localized Force
• Effect of Grain Geometry on Angle of Repose and Dynamics
• Scaling properties of granular materials
• Avalanche statistics of sand heaps
• Numerical investigation of surface level instability due to tube in vibrating bed of powder
• Avalanche Mixing of Granular Solids
• Clustering Instabilities, Arching, and Anomalous Interaction Probabilities as Examples for Cooperative Phenomena in Dry Granular Media
• Scaling Analysis of Improved Actions for Pure SU(3) Gauge Theory
• Force Distribution and Comminution in Ball Mills
• Interaction of a granular stream with an obstacle