Wang, Z, Yang, Y, Lu, N et al. (2 more authors) (2019) Effects of the principal stress rotation in numerical simulations of geotechnical laboratory cyclic tests. Computers and Geotechnics, 109. pp. 220-228. ISSN 0266-352X
Abstract
Cyclic stress paths in geotechnical experiments can generate considerable principal stress rotation (PSR) in the saturated soil. The PSR without changes of principal stress magnitudes can generate additional excess pore water pressures and plastic strains, thus accelerating liquefactions in undrained conditions. This paper simulates a series of laboratory tests considering the PSR using two types of sand. The impact of PSR is taken into account by using an elastoplastic soil model developed on the basis of a kinematic hardening soil model with the bounding surface concept. The soil model considers the PSR by treating the stress rate generating the PSR independently. The capability of this soil model is verified by comparing the numerical predictions with and without PSR, as well as experimental results. The comparative results indicate that the simulation with the soil model considering the PSR can better reproduce the test results on the development of shear strain, reduction of effective confining pressure and liquefaction than the soil model without PSR. Therefore, it is important to consider PSR effects in simulations of geotechnical experiments under cyclic loadings.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2019, Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Computers and Geotechnics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Soil elastoplastic model; Principal stress rotation; Liquefaction; Cyclic loading; Numerical simulation |
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: | 08 Jul 2019 15:48 |
Last Modified: | 06 Feb 2020 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.compgeo.2019.01.023 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:148038 |
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Filename: PSR geo lab cyclic test-WangZhe-computer geotechnics.pdf
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