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      A Model for Force Fluctuations in Bead Packs

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          Abstract

          We study theoretically the complex network of forces that is responsible for the static structure and properties of granular materials. We present detailed calculations for a model in which the fluctuations in the force distribution arise because of variations in the contact angles and the constraints imposed by the force balance on each bead of the pile. We compare our results for force distribution function for this model, including exact results for certain contact angle probability distributions, with numerical simulations of force distributions in random sphere packings. This model reproduces many aspects of the force distribution observed both in experiment and in numerical simulations of sphere packings.

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          Most cited references 19

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          Self-organized criticality: An explanation of the 1/fnoise

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            Physics of the granular state.

             H Jaeger,  S Nagel (1992)
            Granular materials display a variety of behaviors that are in many ways different from those of other substances. They cannot be easily classified as either solids or liquids. This has prompted the generation of analogies between the physics found in a simple sandpile and that found in complicated microscopic systems, such as flux motion in superconductors or spin glasses. Recently, the unusual behavior of granular systems has led to a number of new theories and to a new era of experimentation on granular systems.
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              Energy corrections of order\({\mathit{mc}}^{2}\)\({\mathrm{\alpha }}^{6}\)lnα in helium

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                Author and article information

                Journal
                21 November 1995
                10.1103/PhysRevE.53.4673
                cond-mat/9511105
                Custom metadata
                cond-mat

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