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Fabric anisotropy & DEM informed two-surface hyperplasticity : constitutive formulation, asymptotic states & experimental validation.

Coombs, W.M. and Crouch, R.S. (2014) 'Fabric anisotropy & DEM informed two-surface hyperplasticity : constitutive formulation, asymptotic states & experimental validation.', in Geomechanics from micro to macro : IS-Cambridge 2014, 1-3 September, Cambridge, UK ; proceedings. , pp. 777-782.

Abstract

In geotechnical analysis continuum idealisations of the bulk material still provide the most appropriate approach for engineers designing large-scale structures. In this area, the most successful framework for describing the behaviour of soils is Critical State (CS) soil mechanics. However, the findings from discrete element method (DEM) analysis, such as the uniqueness of the CS, can provide invaluable information in the development such models. This paper details the key concepts behind a two-surface hyperplasticity model (?) whose development was informed by recent DEM findings on the uniqueness of the CS. Asymptotic states of the model will be confirmed and the DEM-continuum-experimental loop will be closed through comparison of the developed model with experimental data on coarse-grained particulate media. This will demonstrate, that providing the previous stress history is accounted for, the proposed model is suitable for a variety of particulate media.

Item Type:Book chapter
Additional Information:The International Symposium on Geomechanics from Micro to Macro: 1-3 September 2014, Cambridge, UK.
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:http://www.crcpress.com/product/isbn/9781138027077
Date accepted:No date available
Date deposited:26 September 2014
Date of first online publication:August 2014
Date first made open access:26 February 2016

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