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24 April 2024

» pubmed » pmid11461569

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Footprints in sand: the response of a granular material to local perturbations
J Geng ; D Howell ; E Longhi ; R P Behringer ; G Reydellet ; L Vanel ; E Clément ; S Luding ;
Date:	16 Jul 2001
Journal:	Phys Rev Lett, 87 (3), 035506
Abstract:	We experimentally determine ensemble-averaged responses of granular packings to point forces, and we compare these results to recent models for force propagation in a granular material. We use 2D granular arrays consisting of photoelastic particles: either disks or pentagons, thus spanning the range from ordered to disordered packings. A key finding is that spatial ordering of the particles is a key factor in the force response. Ordered packings have a propagative component that does not occur in disordered packings.
Source:	PubMed, pmid11461569
Other source:	[GID 205596] cond-mat/0012127
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