Spanning the scales of granular materials through microscopic force imaging.

dc.contributor.author

Brodu, N

dc.contributor.author

Dijksman, JA

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Behringer, RP

dc.coverage.spatial

England

dc.date.accessioned

2015-03-11T20:50:13Z

dc.date.issued

2015-03-05

dc.description.abstract

If you walk on sand, it supports your weight. How do the disordered forces between particles in sand organize, to keep you from sinking? This simple question is surprisingly difficult to answer experimentally: measuring forces in three dimensions, between deeply buried grains, is challenging. Here we describe experiments in which we have succeeded in measuring forces inside a granular packing subject to controlled deformations. We connect the measured micro-scale forces to the macro-scale packing force response with an averaging, mean field calculation. This calculation explains how the combination of packing structure and contact deformations produce the observed nontrivial mechanical response of the packing, revealing a surprising microscopic particle deformation enhancement mechanism.

dc.identifier

http://www.ncbi.nlm.nih.gov/pubmed/25739968

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ncomms7361

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2041-1723

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https://hdl.handle.net/10161/9502

dc.language

eng

dc.publisher

Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.

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Nat Commun

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10.1038/ncomms7361

dc.title

Spanning the scales of granular materials through microscopic force imaging.

dc.type

Journal article

pubs.author-url

http://www.ncbi.nlm.nih.gov/pubmed/25739968

pubs.begin-page

6361

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Duke

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Physics

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Trinity College of Arts & Sciences

pubs.publication-status

Published online

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6

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