A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils

Dat G. Phan; Giang D. Nguyen; Ha H. Bui; Terry Bennett

doi:10.1007/978-3-030-64514-4_53

A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils

Dat G. Phan, Giang D. Nguyen, Ha H. Bui, Terry Bennett

Civil & Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

The nonlinear behaviour of unsaturated soils is governed by the fully coupled hydro-mechanical phenomenon due to the irrecoverable movement of particles and fluids. It is usually accounted for in constitutive modeling using separate evolution rules for plastic deformation and saturation, linked with two yield conditions for stress and suction. In this paper, a new generic thermodynamics-based approach is developed to provide a more rigorous way to capture these underlying mechanisms. A special form of dissipation potential leading to strong inter-dependence of mechanical and hydraulic internal variables is used for the derivation of a single yield surface. A specific critical state model using a small number of identifiable parameters is derived from the proposed formulation. Its capabilities in predicting the drained and undrained experimental results are investigated to highlight the applicability of our approach.

Original language	English
Title of host publication	Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1
Editors	Marco Barla, Alice Di Donna, Donatella Sterpi
Publisher	Springer
Pages	531-538
Number of pages	8
ISBN (Print)	9783030645137
DOIs	https://doi.org/10.1007/978-3-030-64514-4_53
Publication status	Published - 2021
Event	International Conference of the International Association for Computer Methods and Advances in Geomechanics 2021 - Turin, Italy Duration: 5 May 2021 → 8 May 2021 Conference number: 16th https://link.springer.com/book/10.1007/978-3-030-64518-2 (Proceedings) https://www.issmge.org/events/16th-international-conference-of-the-international-association-for-computer-methods-and-advances-in-geomechanics-iacmag (Website)

Publication series

Name	Lecture Notes in Civil Engineering
Volume	125
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	International Conference of the International Association for Computer Methods and Advances in Geomechanics 2021
Abbreviated title	IACMAG 2021
Country/Territory	Italy
City	Turin
Period	5/05/21 → 8/05/21
Internet address	https://link.springer.com/book/10.1007/978-3-030-64518-2 (Proceedings) https://www.issmge.org/events/16th-international-conference-of-the-international-association-for-computer-methods-and-advances-in-geomechanics-iacmag (Website)

Keywords

Constitutive modelling
Coupled hydro-mechanical
Thermodynamics
Unsaturated soils

Access to Document

10.1007/978-3-030-64514-4_53

Cite this

Phan, D. G., Nguyen, G. D., Bui, H. H., & Bennett, T. (2021). A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils. In M. Barla, A. Di Donna, & D. Sterpi (Eds.), Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1 (pp. 531-538). (Lecture Notes in Civil Engineering; Vol. 125). Springer. https://doi.org/10.1007/978-3-030-64514-4_53

Phan, Dat G. ; Nguyen, Giang D. ; Bui, Ha H. et al. / A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils. Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1. editor / Marco Barla ; Alice Di Donna ; Donatella Sterpi. Springer, 2021. pp. 531-538 (Lecture Notes in Civil Engineering).

@inproceedings{20191280fbdd4f87ac07d729b52e1fbc,

title = "A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils",

abstract = "The nonlinear behaviour of unsaturated soils is governed by the fully coupled hydro-mechanical phenomenon due to the irrecoverable movement of particles and fluids. It is usually accounted for in constitutive modeling using separate evolution rules for plastic deformation and saturation, linked with two yield conditions for stress and suction. In this paper, a new generic thermodynamics-based approach is developed to provide a more rigorous way to capture these underlying mechanisms. A special form of dissipation potential leading to strong inter-dependence of mechanical and hydraulic internal variables is used for the derivation of a single yield surface. A specific critical state model using a small number of identifiable parameters is derived from the proposed formulation. Its capabilities in predicting the drained and undrained experimental results are investigated to highlight the applicability of our approach.",

keywords = "Constitutive modelling, Coupled hydro-mechanical, Thermodynamics, Unsaturated soils",

author = "Phan, {Dat G.} and Nguyen, {Giang D.} and Bui, {Ha H.} and Terry Bennett",

note = "Funding Information: Acknowledgements. The authors gratefully acknowledge support from the Australian Research Council via Discovery Projects FT140100408 (Nguyen), DP170103793 (Nguyen & Bui), and DP190102779 (Bui & Nguyen). Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.; International Conference of the International Association for Computer Methods and Advances in Geomechanics 2021, IACMAG 2021 ; Conference date: 05-05-2021 Through 08-05-2021",

year = "2021",

doi = "10.1007/978-3-030-64514-4_53",

language = "English",

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pages = "531--538",

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booktitle = "Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1",

url = "https://link.springer.com/book/10.1007/978-3-030-64518-2, https://www.issmge.org/events/16th-international-conference-of-the-international-association-for-computer-methods-and-advances-in-geomechanics-iacmag",

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Phan, DG, Nguyen, GD, Bui, HH & Bennett, T 2021, A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils. in M Barla, A Di Donna & D Sterpi (eds), Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1. Lecture Notes in Civil Engineering, vol. 125, Springer, pp. 531-538, International Conference of the International Association for Computer Methods and Advances in Geomechanics 2021, Turin, Italy, 5/05/21. https://doi.org/10.1007/978-3-030-64514-4_53

A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils. / Phan, Dat G.; Nguyen, Giang D.; Bui, Ha H. et al.
Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1. ed. / Marco Barla; Alice Di Donna; Donatella Sterpi. Springer, 2021. p. 531-538 (Lecture Notes in Civil Engineering; Vol. 125).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

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T1 - A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils

AU - Phan, Dat G.

AU - Nguyen, Giang D.

AU - Bui, Ha H.

AU - Bennett, Terry

N1 - Conference code: 16th

PY - 2021

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N2 - The nonlinear behaviour of unsaturated soils is governed by the fully coupled hydro-mechanical phenomenon due to the irrecoverable movement of particles and fluids. It is usually accounted for in constitutive modeling using separate evolution rules for plastic deformation and saturation, linked with two yield conditions for stress and suction. In this paper, a new generic thermodynamics-based approach is developed to provide a more rigorous way to capture these underlying mechanisms. A special form of dissipation potential leading to strong inter-dependence of mechanical and hydraulic internal variables is used for the derivation of a single yield surface. A specific critical state model using a small number of identifiable parameters is derived from the proposed formulation. Its capabilities in predicting the drained and undrained experimental results are investigated to highlight the applicability of our approach.

AB - The nonlinear behaviour of unsaturated soils is governed by the fully coupled hydro-mechanical phenomenon due to the irrecoverable movement of particles and fluids. It is usually accounted for in constitutive modeling using separate evolution rules for plastic deformation and saturation, linked with two yield conditions for stress and suction. In this paper, a new generic thermodynamics-based approach is developed to provide a more rigorous way to capture these underlying mechanisms. A special form of dissipation potential leading to strong inter-dependence of mechanical and hydraulic internal variables is used for the derivation of a single yield surface. A specific critical state model using a small number of identifiable parameters is derived from the proposed formulation. Its capabilities in predicting the drained and undrained experimental results are investigated to highlight the applicability of our approach.

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KW - Coupled hydro-mechanical

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M3 - Conference Paper

AN - SCOPUS:85101522125

SN - 9783030645137

T3 - Lecture Notes in Civil Engineering

SP - 531

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BT - Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1

A2 - Barla, Marco

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PB - Springer

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Y2 - 5 May 2021 through 8 May 2021

ER -

Phan DG, Nguyen GD, Bui HH, Bennett T. A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils. In Barla M, Di Donna A, Sterpi D, editors, Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1. Springer. 2021. p. 531-538. (Lecture Notes in Civil Engineering). doi: 10.1007/978-3-030-64514-4_53

A thermodynamics-based formulation for coupled hydro-mechanical behaviour of unsaturated soils

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Keywords

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