Kinematic models for non-coaxial granular materials. Part II: evaluation

Jiang, M.J. and Harris, D. and Yu, H.S. (2005) Kinematic models for non-coaxial granular materials. Part II: evaluation. International Journal for Numerical and Analytical Methods in Geomechanics, 29 (7). pp. 663-689. ISSN 0363-9061

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Abstract

In this paper we present results of numerical simulations for the evaluation of kinematic models for non-coaxial granular materials by the distinct element method (DEM). Strain-rate controlled monotonic and cyclic un-drained simple shear tests were specifically designed and evaluation criteria established for this purpose. The models examined are the double-shearing model, the double-sliding free-rotating model, and the double slip and rotation rate model (DSR2 model) proposed by the authors (see the accompanying paper). It is shown that the assumption used in the double-shearing model appears to not be in agreement with the DEM data. It is also shown that in the double-sliding free-rotating model the energy dissipation requirements appear to be unduly restrictive as a constitutive assumption. The DSR2 model, which is a hybrid of discrete micro-mechanics and continuum modelling, gives better agreement with the results of our DEM simulations, than either the double-shearing model or the double-sliding free-rotating model. Copyright © 2005 John Wiley & Sons, Ltd.

Item Type:	Article
Uncontrolled Keywords:	model evaluation • non-coaxial kinematic models • granular materials • numerical simulations • distinct element method
Subjects:	MSC 2010, the AMS's Mathematics Subject Classification > 70 Mechanics of particles and systems MSC 2010, the AMS's Mathematics Subject Classification > 74 Mechanics of deformable solids MSC 2010, the AMS's Mathematics Subject Classification > 86 Geophysics
Depositing User:	Ms Lucy van Russelt
Date Deposited:	12 Jul 2006
Last Modified:	20 Oct 2017 14:12
URI:	https://eprints.maths.manchester.ac.uk/id/eprint/371

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