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Emergence of Gamma distributions in granular materials and packing models

Aste, Tomaso; Di Matteo, Tiziana

Description

We study the distribution of volume fluctuations in experiments and numerical simulations concerning equal-sized sphere packings prepared with different techniques. We show that the distribution of the local volumes (Voronoï cells) and also the distributions of the global volumes (whole samples) follow remarkably well a shifted and rescaled Gamma distribution that we name a k-Gamma distribution. Such agreement is robust over a broad range of packing fractions and it is observed for several...[Show more]

CollectionsANU Research Publications
Date published: 2008-02-29
Type: Journal article
URI: http://hdl.handle.net/10440/698
http://digitalcollections.anu.edu.au/handle/10440/698
Source: Physical Review E-Statistical, Nonlinear and Soft Matter Physics
DOI: 10.1103/PhysRevE.77.021309

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