Role of anisotropy in the elastoplastic response of a polygonal packing

Alonso-Marroquin, F, Luding, S, Herrmann, HJ and Vardoulakis, I (2005) Role of anisotropy in the elastoplastic response of a polygonal packing. Physical Review E, 71 5: 051304-1-051304-18. doi:10.1103/PhysRevE.71.051304

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Author Alonso-Marroquin, F
Luding, S
Herrmann, HJ
Vardoulakis, I
Title Role of anisotropy in the elastoplastic response of a polygonal packing
Journal name Physical Review E   Check publisher's open access policy
ISSN 1539-3755
Publication date 2005-05-01
Year available 2005
Sub-type Article (original research)
DOI 10.1103/PhysRevE.71.051304
Open Access Status File (Publisher version)
Volume 71
Issue 5
Start page 051304-1
End page 051304-18
Total pages 18
Place of publication College Pk
Publisher American Physical Soc
Language eng
Abstract We study the effect of the anisotropy induced by loading on the elastoplastic response of a two dimensional discrete element model granular material. The anisotropy of the contact network leads to a breakdown of the linear isotropic elasticity. We report on a linear dependence of the Young moduli and Poisson ratios on the fabric coefficients, measuring the anisotropy of the contact network. The resulting nonassociated plastic flow rule and the linear relationship between dilatancy and stress ratio are discussed in terms of several existing models. We propose a paradigm for understanding soil plasticity, based on the correlation between the plastic flow rule and the induced anisotropy on the subnetwork of sliding contacts.
Keyword Physics, Fluids & Plasmas
Physics, Mathematical
Granular-materials
Assemblies
Stress
Model
Shear
Solids
Fragmentation
Deformation
Transition
Dilatancy
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Earth Systems Science Computational Centre Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 55 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 72 times in Scopus Article | Citations
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Created: Wed, 17 Oct 2007, 23:55:12 EST