English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Non-universal Voronoi cell shapes in amorphous ellipsoid packs

Schaller, F. M., Kapfer, S. C., Hilton, J. E., Cleary, P. W., Mecke, K., De Michele, C., et al. (2015). Non-universal Voronoi cell shapes in amorphous ellipsoid packs. EPL, 111(2): 24002. doi:10.1209/0295-5075/111/24002.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-5EFB-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-C069-B
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Schaller, Fabian M.1, Author              
Kapfer, Sebastian C., Author
Hilton, James E., Author
Cleary, Paul W., Author
Mecke, Klaus, Author
De Michele, Cristiano, Author
Schilling, Tanja, Author
Saadatfar, Mohammad, Author
Schröter, Matthias1, Author              
Delaney, Gary W., Author
Schröder-Turk, Gerd E., Author
Affiliations:
1Group Statistical mechanics of granular media, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063310              

Content

show
hide
Free keywords: -
 Abstract: In particulate systems with short-range interactions, such as granular matter or simple fluids, local structure determines the macroscopic physical properties. We analyse local structure metrics derived from the Voronoi diagram of oblate ellipsoids, for various aspect ratios α and global packing fractions φg. We focus on jammed static configurations of frictional ellipsoids, obtained by tomographic imaging and by discrete element method simulations. The rescaled distribution of local packing fractions φl, defined as the ratio of particle volume and its Voronoi cell volume, is found to be independent of the particle aspect ratio, and coincide with results for sphere packs. By contrast, the typical Voronoi cell shape, quantified by the Minkowski tensor anisotropy index β = β2,0 0 , points towards a difference between random packings of spheres and those of oblate ellipsoids. While the average cell shape β of all cells with a given value of φl is similar in dense and loose jammed sphere packings, the structure of dense and loose ellipsoid packings differs substantially such that this does not hold true.

Details

show
hide
Language(s): eng - English
 Dates: 2015-072015-08-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: BibTex Citekey: schaller-epl-2015
DOI: 10.1209/0295-5075/111/24002
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: EPL
  Other : Europhysics Letters
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: 6 Volume / Issue: 111 (2) Sequence Number: 24002 Start / End Page: - Identifier: ISSN: 0295-5075