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Onset of Mechanical Stability in Random Packings of Frictional Spheres

Jerkins, Melissa, Schröter, Matthias, Swinney, Harry, Senden, Tim, Saadatfar, Mohammad, Aste, Tomaso (2008) Onset of Mechanical Stability in Random Packings of Frictional Spheres. Physical Review Letters: Moving Physics Forward, 101 (1). ISSN 0031-9007. (doi:10.1103/PhysRevLett.101.018301) (KAR id:29178)

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Using sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction ?RLP 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 ?. 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, ?RLP=0.550±0.001.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.101.018301
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Tomaso Aste
Date Deposited: 20 Mar 2012 16:13 UTC
Last Modified: 16 Nov 2021 10:07 UTC
Resource URI: (The current URI for this page, for reference purposes)
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