Local Origin of Global Contact Numbers in Frictional Ellipsoid Packings
dc.contributor.author | Schaller, F.M. | |
dc.contributor.author | Neudecker, Max | |
dc.contributor.author | Saadatfar, Mohammad | |
dc.contributor.author | Delaney, Gary W. | |
dc.contributor.author | Schröder-Turk, Gerd E. | |
dc.contributor.author | Schröter, Matthias | |
dc.date.accessioned | 2015-12-08T22:19:51Z | |
dc.date.issued | 2015 | |
dc.date.updated | 2015-12-08T08:25:51Z | |
dc.description.abstract | In particulate soft matter systems the average number of contacts Z of a particle is an important predictor of the mechanical properties of the system. Using x-ray tomography, we analyze packings of frictional, oblate ellipsoids of various aspect ratios α, prepared at different global volume fractions φg. We find that Z is a monotonically increasing function of φg for all α. We demonstrate that this functional dependence can be explained by a local analysis where each particle is described by its local volume fraction φl computed from a Voronoi tessellation. Z can be expressed as an integral over all values of φl: Z(φg,α,X)=∫Zl(φl,α,X)P(φl|φg)dφl. The local contact number function Zl(φl,α,X) describes the relevant physics in term of locally defined variables only, including possible higher order terms X. The conditional probability P(φl|φg) to find a specific value of φl given a global packing fraction φg is found to be independent of α and X. Our results demonstrate that for frictional particles a local approach is not only a theoretical requirement but also feasible. | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.uri | http://hdl.handle.net/1885/31739 | |
dc.publisher | American Physical Society | |
dc.rights | Author/s retain copyright | en_AU |
dc.source | Physical Review Letters | |
dc.title | Local Origin of Global Contact Numbers in Frictional Ellipsoid Packings | |
dc.type | Journal article | |
dcterms.accessRights | Open Access | en_AU |
local.bibliographicCitation.issue | 15 | |
local.bibliographicCitation.lastpage | 5 | |
local.bibliographicCitation.startpage | 158001/1 | |
local.contributor.affiliation | Schaller, F.M., Friedrich-Alexander Universitat Erlangen-Nurnberg | |
local.contributor.affiliation | Neudecker, Max, Max-Planck-Institut fuer Dynamik und Sebstorganisation | |
local.contributor.affiliation | Saadatfar, Mohammad, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Delaney, Gary W., CSIRO Mathematical and Information Sciences | |
local.contributor.affiliation | Schröder-Turk, Gerd E., Murdoch University | |
local.contributor.affiliation | Schröter, Matthias, Max Planck Institute for Dynamics and Self-Organization | |
local.contributor.authoremail | u3270586@anu.edu.au | |
local.contributor.authoruid | Saadatfar, Mohammad, u3270586 | |
local.description.notes | Imported from ARIES | |
local.identifier.absfor | 091406 - Petroleum and Reservoir Engineering | |
local.identifier.absfor | 091402 - Geomechanics and Resources Geotechnical Engineering | |
local.identifier.absfor | 020405 - Soft Condensed Matter | |
local.identifier.ariespublication | u8606713xPUB85 | |
local.identifier.citationvolume | 114 | |
local.identifier.doi | 10.1103/PhysRevLett.114.158001 | |
local.identifier.scopusID | 2-s2.0-84929590188 | |
local.identifier.uidSubmittedBy | u8606713 | |
local.type.status | Published Version |
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