Jamming transition in granular systems.


Journal Article

Recent simulations have predicted that near jamming for collections of spherical particles, there will be a discontinuous increase in the mean contact number Z at a critical volume fraction phi(c). Above phi(c), Z and the pressure P are predicted to increase as power laws in phi-phi(c). In experiments using photoelastic disks we corroborate a rapid increase in Z at phi(c) and power-law behavior above phi(c) for Z and P. Specifically we find a power-law increase as a function of phi-phi(c) for Z-Z(c) with an exponent beta around 0.5, and for P with an exponent psi around 1.1. These exponents are in good agreement with simulations. We also find reasonable agreement with a recent mean-field theory for frictionless particles.

Full Text

Cited Authors

  • Majmudar, TS; Sperl, M; Luding, S; Behringer, RP

Published Date

  • February 2007

Published In

Volume / Issue

  • 98 / 5

Start / End Page

  • 058001 -

PubMed ID

  • 17358902

Pubmed Central ID

  • 17358902

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.98.058001


  • eng