NDLI: A link between short-range and long-range properties of random sphere packings

Content Provider	Springer Nature Link
Author	Balzan, R. Sellerio, A. L. Mari, D. Comment, A. Gremaud, G.
Copyright Year	2013
Abstract	We present a high precision particle-by-particle 3D reconstruction of granular systems composed of monodispersed spheres (sphere packings); the experimental approach is based on magnetic resonance imaging techniques. Our measurements revealed a strong correlation between the volume defined by the distance to the first nearest neighbor and the long-range average density. The main contribution to the amplitude decay of the correlation function can be described as exponential rather than power law up to a range equal to 7 sphere diameters. No evidence of geometrical structural changes as a function of the density was observed and neither regular crystallites nor any other statistically significant structures could be ascribed to a specific local arrangement. We concluded that granular compaction is the result of a process through which the system changes the average size of local structures without changing their local geometrical characteristics. These conclusions are supported by two-body correlation functions and Voronoi polyhedra space decomposition. The results provide a different perspective on the mechanisms underlying compaction with respect to previous works, and allow to discriminate between the different existing theoretical approaches.
Starting Page	873
Ending Page	879
Page Count	7
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	15
Issue Number	6
e-ISSN	14347636
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Compaction Magnetic resonance imaging (MRI) 3D image reconstruction Bulk structure Voronoi decomposition Correlation function Soft and Granular Matter, Complex Fluids and Microfluidics Engineering Fluid Dynamics Materials Science Geoengineering, Foundations, Hydraulics Industrial Chemistry/Chemical Engineering Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

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