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Onset of mechanical stability in random packings of frictional spheres

Jerkins, Melissa; Schröter, Matthias; Swinney, Harry L.; Senden, Tim J.; Saadatfar, Mohammad; Aste, Tomaso

Description

Using sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction ϕRLP 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 μ. 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...[Show more]

dc.contributor.authorJerkins, Melissa
dc.contributor.authorSchröter, Matthias
dc.contributor.authorSwinney, Harry L.
dc.contributor.authorSenden, Tim J.
dc.contributor.authorSaadatfar, Mohammad
dc.contributor.authorAste, Tomaso
dc.date.accessioned2014-09-23T23:45:54Z
dc.date.available2014-09-23T23:45:54Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/12076
dc.description.abstractUsing sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction ϕRLP 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 μ. 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, ϕRLP=0.550±0.001.
dc.format4 pages
dc.publisherAmerican Physical Society
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0031-9007/ "...Publisher's version/PDF can be used on author's personal website, employers website or institutional repository..." from SHERPA/RoMEO site (as at 19/09/14)
dc.sourcePhysical Review Letters 101 (2008): 018301
dc.subjectKeywords: Control theory; Diagnostic radiography; Friction; Imaging techniques; Mechanical stability; Medical imaging; Military data processing; Sedimentation; Spheres; Titration; Tomography; American Physical Society (APS); Boundary effects; Frictional spheres; In
dc.titleOnset of mechanical stability in random packings of frictional spheres
dc.typeJournal article
local.identifier.citationvolume101
dc.date.issued2008-07-02
local.identifier.absfor020304 - Thermodynamics and Statistical Physics
local.identifier.absfor020401 - Condensed Matter Characterisation Technique Development
local.identifier.ariespublicationu9210271xPUB208
local.publisher.urlhttp://www.aps.org/
local.type.statusPublished Version
local.contributor.affiliationSaadatfar, M, ANU Research School of Physics and Engineering
local.contributor.affiliationSenden, T, ANU Research School of Physics and Engineering
local.contributor.affiliationAste, T, ANU Research School of Physics and Engineering
local.identifier.essn1079-7114
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage018301
local.identifier.doi10.1103/PhysRevLett.101.018301
dc.date.updated2015-12-09T08:17:27Z
local.identifier.scopusID2-s2.0-46949087835
local.identifier.thomsonID000257424700070
CollectionsANU Research Publications

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