Local contact numbers in two-dimensional packings of frictional disks

Silke Henkes*, Kostya Shundyak, Wim Van Saarloos, Martin Van Hecke

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

10 Citations (Scopus)


We analyze the local structure of two-dimensional packings of frictional disks numerically. We focus on the fractions xi of particles that are in contact with i neighbors, and systematically vary the confining pressure p and friction coefficient μ. We find that for all μ, the fractions x i exhibit power-law scaling with p, which allows us to obtain an accurate estimate for xi at zero pressure. We uncover how these zero pressure fractions xi vary with μ, and introduce a simple model that captures most of this variation. We also probe the correlations between the contact numbers of neighboring particles.

Original languageEnglish
Pages (from-to)2935-2938
Number of pages4
JournalSoft Matter
Issue number13
Publication statusPublished - 7 Jul 2010

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Copyright 2010 Elsevier B.V., All rights reserved.


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