Lu, N, Yang, Y, Yu, H-S orcid.org/0000-0003-3330-1531 et al. (1 more author)
(2020)
Modelling the simple shear behaviour of clay considering principal stress rotation.
Mechanics Research Communications, 103.
103474.
ISSN 0093-6413
Abstract
Simple shear deformation is prevailing in geotechnical problems. One of its salient features is the rotation of the principal stress axes. Early numerical modelling of soil simple shear behaviour usually neglects the plastic deformation induced by principal stress rotation. Recent attempts at accurately modelling the sand simple shear behaviour have accounted for this loading mechanism, but those for the clay simple shear modelling are rare. To fill the gap, this paper presents a simple constitutive model for the simulation of clay simple shear behaviour with consideration of the effect of the principal stress rotation. The model uses a non-associative flow rule and incorporates an additional mechanism associated with the principal stress rotation. The new mechanism caters for the soil non-coaxiality and plastic volumetric response under pure rotation of principal stress axes. Stress–strain incremental linearity is maintained in the proposed model. Comparisons of simulations with clay simple shear test data justify the importance of the principal stress rotation. The model satisfactorily captures the undrained shear strength. The soil non-coaxial behaviour is also well reproduced.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Mechanics Research Communications. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Clay constitutive model; Simple shear; Principal stress rotation; Undrained shear strength; Non-coaxiality |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Feb 2020 15:26 |
Last Modified: | 15 Jan 2021 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.mechrescom.2020.103474 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:156964 |