Length scales from elastic buckling of a force chain under confined axial compression

Tordesillas, Antoinette, Carey, David and Shi, Jingyu (2013). Length scales from elastic buckling of a force chain under confined axial compression. In: Powders and Grains 2013 - Proceedings of the 7th International Conference on Micromechanics of Granular Media. 7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013, Sydney, NSW Australia, (605-608). 8 - 12 July 2013. doi:10.1063/1.4812004

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Author Tordesillas, Antoinette
Carey, David
Shi, Jingyu
Title of paper Length scales from elastic buckling of a force chain under confined axial compression
Conference name 7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013
Conference location Sydney, NSW Australia
Conference dates 8 - 12 July 2013
Proceedings title Powders and Grains 2013 - Proceedings of the 7th International Conference on Micromechanics of Granular Media   Check publisher's open access policy
Journal name AIP Conference Proceedings   Check publisher's open access policy
Place of Publication College Park, MD 20740 United States
Publisher American Institute of Physics
Publication Year 2013
Sub-type Fully published paper
DOI 10.1063/1.4812004
ISBN 9780735411661
ISSN 0094-243X
1551-7616
Volume 1542
Start page 605
End page 608
Total pages 4
Collection year 2014
Language eng
Abstract/Summary In a deforming densely packed granular material, the columnar force chains carry the majority of the load, while the surrounding weak network neighbours provide these chains lateral support. Despite this confinement, the discrete nature of the granular assembly renders these force chain columns particularly prone to failure by buckling. The focus of this paper is the elastic buckling of a single N + 2 particle force chain under lateral support, using the techniques of Structural Mechanics. The minimum critical buckling load and its corresponding buckling mode are determined. We investigate the properties of this mode, specifically, the dependence of its wavelength and minimum critical load on material properties, boundary conditions and the number of particles in the chain. A possible link between these properties and the characteristic length scale of shear bands is explored.
Subjects 3100 Physics and Astronomy
Keyword Buckling
Force Chains
Granular Materials
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Earth Sciences Publications
Official 2014 Collection
 
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Created: Fri, 29 Nov 2013, 03:41:15 EST by System User on behalf of School of Earth Sciences