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Modeling force transmission in granular materials

TitleModeling force transmission in granular materials
Publication TypeJournal Article
Year of Publication2015
AuthorsRadjaï F
JournalComptes Rendus Physique
Volume16
Issue1
Pagination3 - 9
Date PublishedFeb-2015
ISSN16310705
Abstract

The probability density function of contact forces in granular materials has been extensively studied and modeled as an outstanding signature of granular microstructure. Arguing that particle environments play a fundamental role in force transmission, we analyze the effects of steric constraints with respect to force balance condition and show that each force may be considered as resulting from a balance between lower and larger forces in proportions that mainly depend on steric effects. This idea leads to a general model that predicts an analytical expression of force density with a single free parameter. This expression fits well our simulation data and generically predicts the exponential fall-off of strong forces, a small peak below the mean force and the non-zero probability of vanishingly small forces.

DOI10.1016/j.crhy.2015.01.003
Short TitleComptes Rendus Physique
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