Quantifying Interparticle Forces and Heterogeneity in 3D Granular Materials
(2016) In Physical Review Letters 117(9).- Abstract
Interparticle forces in granular materials are intimately linked to mechanical properties and are known to self-organize into heterogeneous structures, or force chains, under external load. Despite progress in understanding the statistics and spatial distribution of interparticle forces in recent decades, a systematic method for measuring forces in opaque, three-dimensional (3D), frictional, stiff granular media has yet to emerge. In this Letter, we present results from an experiment that combines 3D x-ray diffraction, x-ray tomography, and a numerical force inference technique to quantify interparticle forces and their heterogeneity in an assembly of quartz grains undergoing a one-dimensional compression cycle. Forces exhibit an... (More)
Interparticle forces in granular materials are intimately linked to mechanical properties and are known to self-organize into heterogeneous structures, or force chains, under external load. Despite progress in understanding the statistics and spatial distribution of interparticle forces in recent decades, a systematic method for measuring forces in opaque, three-dimensional (3D), frictional, stiff granular media has yet to emerge. In this Letter, we present results from an experiment that combines 3D x-ray diffraction, x-ray tomography, and a numerical force inference technique to quantify interparticle forces and their heterogeneity in an assembly of quartz grains undergoing a one-dimensional compression cycle. Forces exhibit an exponential decay above the mean and partition into strong and weak networks. We find a surprising inverse relationship between macroscopic load and the heterogeneity of interparticle forces, despite the clear emergence of two force chains that span the system.
(Less)
- author
- Hurley, R. C. ; Hall, S. A. LU ; Andrade, J. E. and Wright, J.
- organization
- publishing date
- 2016-08-24
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 117
- issue
- 9
- article number
- 098005
- publisher
- American Physical Society
- external identifiers
-
- pmid:27610890
- wos:000382008100016
- scopus:84988485765
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.117.098005
- language
- English
- LU publication?
- yes
- id
- 66c85e12-f241-4cab-9bbf-14a8b6daccf6
- date added to LUP
- 2016-12-02 13:07:18
- date last changed
- 2024-07-12 21:32:24
@article{66c85e12-f241-4cab-9bbf-14a8b6daccf6,
abstract = {{<p>Interparticle forces in granular materials are intimately linked to mechanical properties and are known to self-organize into heterogeneous structures, or force chains, under external load. Despite progress in understanding the statistics and spatial distribution of interparticle forces in recent decades, a systematic method for measuring forces in opaque, three-dimensional (3D), frictional, stiff granular media has yet to emerge. In this Letter, we present results from an experiment that combines 3D x-ray diffraction, x-ray tomography, and a numerical force inference technique to quantify interparticle forces and their heterogeneity in an assembly of quartz grains undergoing a one-dimensional compression cycle. Forces exhibit an exponential decay above the mean and partition into strong and weak networks. We find a surprising inverse relationship between macroscopic load and the heterogeneity of interparticle forces, despite the clear emergence of two force chains that span the system.</p>}},
author = {{Hurley, R. C. and Hall, S. A. and Andrade, J. E. and Wright, J.}},
issn = {{0031-9007}},
language = {{eng}},
month = {{08}},
number = {{9}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Quantifying Interparticle Forces and Heterogeneity in 3D Granular Materials}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.117.098005}},
doi = {{10.1103/PhysRevLett.117.098005}},
volume = {{117}},
year = {{2016}},
}