ACMEG-TS: A constitutive model for unsaturated soils under non-isothermal conditions.

François, Bertrand; Laloui, Lyesse

doi:10.1002/nag.712

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ACMEG-TS: A constitutive model for unsaturated soils under non-isothermal conditions.

François, Bertrand; Laloui, Lyesse

2008 • In International Journal for Numerical and Analytical Methods in Geomechanics, 32, p. 1955-1988

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https://hdl.handle.net/2268/26914

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10.1002/nag.712

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Keywords :

temperature; unsaturated soils; elasto-plasticity; constitutive modelling; generalized effective stress; environmental geomechanics

Abstract :

[en] This paper introduces an unconventional constitutive model for soils, which deals with a unified thermomechanical modelling for unsaturated soils. The relevant temperature and suction effects are studied in light of elasto-plasticity. A generalized effective stress framework is adopted, which includes a number of intrinsic thermo-hydro-mechanical connections, to represent the stress state in the soil. Two coupled constitutive aspects are used to fully describe the non-isothermal behaviour. The mechanical constitutive part is built on the concepts of bounding surface theory and multi-mechanism plasticity, whereas water retention characteristics are described using elasto-plasticity to reproduce the hysteretic response and the effect of temperature and dry density on retention properties. The theoretical formulation is supported by comparisons with experimental results on two compacted clays.

Disciplines :

Civil engineering

Author, co-author :

François, Bertrand ; Ecole Polytechnique Fédérale de Lausanne - EPFL > Soil Mechanics laboratory

Laloui, Lyesse

Language :

English

Title :

ACMEG-TS: A constitutive model for unsaturated soils under non-isothermal conditions.

Publication date :

2008

Journal title :

International Journal for Numerical and Analytical Methods in Geomechanics

ISSN :

0363-9061

eISSN :

1096-9853

Publisher :

John Wiley & Sons, New York, United States - New York

Volume :

Pages :

1955-1988

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 27 October 2009

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Scopus citations^®

132

Scopus citations^®
without self-citations

OpenCitations

OpenAlex citations

128

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