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  • Title: Force fabric and macroscopic friction in two-dimensional granular materials.
    Author: Medina E, García X, Urdaneta V.
    Journal: Phys Rev E Stat Nonlin Soft Matter Phys; 2010 Feb; 81(2 Pt 1):022301. PubMed ID: 20365615.
    Abstract:
    We study the relationship between the local grain-grain friction and the force texture in a granular pile to its macroscopic emergent frictional values. We account for the force geometrical properties by a model that assumes the existence of slide planes that define macroscopic friction angles. The model depends on the measured angular distribution of contact forces and a single parameter, to be fitted, that is a function of the roughness of the slide plane. The model is tested by a state-of-the-art model of a two-dimensional granular pile built by depositing grains under gravity and submitted to an external uniaxial stress.
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