Spanning the scales of granular materials through microscopic force imaging.

Loading...
Thumbnail Image

Date

2015-03-05

Journal Title

Journal ISSN

Volume Title

Repository Usage Stats

285
views
271
downloads

Citation Stats

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.

Department

Description

Provenance

Subjects

Citation

Published Version (Please cite this version)

10.1038/ncomms7361

Publication Info

Brodu, N, JA Dijksman and RP Behringer (2015). Spanning the scales of granular materials through microscopic force imaging. Nat Commun, 6. p. 6361. 10.1038/ncomms7361 Retrieved from https://hdl.handle.net/10161/9502.

This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.


Unless otherwise indicated, scholarly articles published by Duke faculty members are made available here with a CC-BY-NC (Creative Commons Attribution Non-Commercial) license, as enabled by the Duke Open Access Policy. If you wish to use the materials in ways not already permitted under CC-BY-NC, please consult the copyright owner. Other materials are made available here through the author’s grant of a non-exclusive license to make their work openly accessible.