Multi-scale mechanics of granular solids from grain-resolved X-ray measurements
(2017) In Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 473(2207).- Abstract
This work discusses an experimental technique for studying the mechanics of three-dimensional (3D) granular solids. The approach combines 3D X-ray diffraction and X-ray computed tomography to measure grain-resolved strains, kinematics and contact fabric in the bulk of a granular solid, from which continuum strains, grain stresses, interparticle forces and coarse-grained elasto-plastic moduli can be determined. We demonstrate the experimental approach and analysis of selected results on a sample of 1099 stiff, frictional grains undergoing multiple uniaxial compression cycles. We investigate the interparticle force network, elasto-plastic moduli and associated length scales, reversibility of mechanical responses during cyclic loading, the... (More)
This work discusses an experimental technique for studying the mechanics of three-dimensional (3D) granular solids. The approach combines 3D X-ray diffraction and X-ray computed tomography to measure grain-resolved strains, kinematics and contact fabric in the bulk of a granular solid, from which continuum strains, grain stresses, interparticle forces and coarse-grained elasto-plastic moduli can be determined. We demonstrate the experimental approach and analysis of selected results on a sample of 1099 stiff, frictional grains undergoing multiple uniaxial compression cycles. We investigate the interparticle force network, elasto-plastic moduli and associated length scales, reversibility of mechanical responses during cyclic loading, the statistics of microscopic responses and microstructure-property relationships. This work serves to highlight both the fundamental insight into granular mechanics that is furnished by combined X-ray measurements and describes future directions in the field of granular materials that can be pursued with such approaches.
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- author
- Hurley, R. C. ; Hall, S. A. LU and Wright, J. P.
- organization
- publishing date
- 2017-11-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Granular solids, Multi-scale mechanics, Three-dimensional X-ray diffraction, X-ray computed tomography
- in
- Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
- volume
- 473
- issue
- 2207
- article number
- 20170491
- publisher
- Royal Society Publishing
- external identifiers
-
- wos:000416736700016
- pmid:29225500
- scopus:85037742878
- ISSN
- 1364-5021
- DOI
- 10.1098/rspa.2017.0491
- language
- English
- LU publication?
- yes
- id
- 40b1aef5-243a-4eda-89d3-b2da10712190
- date added to LUP
- 2018-01-04 11:08:44
- date last changed
- 2025-01-08 01:46:21
@article{40b1aef5-243a-4eda-89d3-b2da10712190,
abstract = {{<p>This work discusses an experimental technique for studying the mechanics of three-dimensional (3D) granular solids. The approach combines 3D X-ray diffraction and X-ray computed tomography to measure grain-resolved strains, kinematics and contact fabric in the bulk of a granular solid, from which continuum strains, grain stresses, interparticle forces and coarse-grained elasto-plastic moduli can be determined. We demonstrate the experimental approach and analysis of selected results on a sample of 1099 stiff, frictional grains undergoing multiple uniaxial compression cycles. We investigate the interparticle force network, elasto-plastic moduli and associated length scales, reversibility of mechanical responses during cyclic loading, the statistics of microscopic responses and microstructure-property relationships. This work serves to highlight both the fundamental insight into granular mechanics that is furnished by combined X-ray measurements and describes future directions in the field of granular materials that can be pursued with such approaches.</p>}},
author = {{Hurley, R. C. and Hall, S. A. and Wright, J. P.}},
issn = {{1364-5021}},
keywords = {{Granular solids; Multi-scale mechanics; Three-dimensional X-ray diffraction; X-ray computed tomography}},
language = {{eng}},
month = {{11}},
number = {{2207}},
publisher = {{Royal Society Publishing}},
series = {{Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences}},
title = {{Multi-scale mechanics of granular solids from grain-resolved X-ray measurements}},
url = {{http://dx.doi.org/10.1098/rspa.2017.0491}},
doi = {{10.1098/rspa.2017.0491}},
volume = {{473}},
year = {{2017}},
}