Onset of mechanical stability in random packings of frictional spheres.


Journal Article

Using sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction phiRLP of the loosest mechanically stable packing is in an operational sense well defined by a limit process. This random loose packing volume fraction decreases with decreasing pressure p and increasing interparticle friction coefficient mu. Using x-ray tomography to correct for a container boundary effect that depends on particle size, we find for rough particles in the limit p-->0 a new lower bound, phiRLP=0.550+/-0.001.

Full Text

Cited Authors

  • Jerkins, M; Schröter, M; Swinney, HL; Senden, TJ; Saadatfar, M; Aste, T

Published Date

  • July 2, 2008

Published In

Volume / Issue

  • 101 / 1

Start / End Page

  • 018301 -

PubMed ID

  • 18764158

Pubmed Central ID

  • 18764158

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.101.018301


  • eng