Abstract
In this paper, a state-dependent semi-micromechanical framework for anisotropic sands is proposed. A simple constitutive model based on critical state theory and bounding surface (BS) plasticity is used to describe idealized micro-level soil behaviour, and a slip theory based multilaminate framework employed to create a link between the micro and macro level responses of soil. A contact normal based second order fabric tensor is used to create a mathematical description of the anisotropic nature of sand. The proposed constitutive framework can reproduce various soil responses, stemming from both the inherent anisotropy which highly depends on the sample preparation method and induced anisotropy resulting from the applied stress path. This paper presents concise theoretical aspects of the multilaminate framework and the anisotropic elastoplastic constitutive formulation. Finally, the model's performance in predicting sand response is demonstrated under drained and undrained conditions at different stress states, relative densities and loading conditions by simulating Karlsruhe sand, and is examined through a comparison with two other sophisticated constitutive models for sand, namely the Dafalias and Manzari (2004) version of Sanisand and hypoplasticity with intergranular strain.
Original language | English |
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Title of host publication | Challenges and Innovations in Geomechanics |
Subtitle of host publication | Proceedings of the 16th International Conference of IACMAG |
Editors | Marco Barla, Alessandra Insana, Alice Di Donna, Donatella Sterpi |
Publisher | Springer |
Pages | 63-70 |
Number of pages | 8 |
Volume | 3 |
ISBN (Print) | 9783031128509 |
DOIs | |
Publication status | Published - 2023 |
Event | 6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022 - Turin, Italy Duration: 30 Aug 2022 → 2 Sept 2022 |
Publication series
Name | Lecture Notes in Civil Engineering |
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Volume | 288 LNCE |
ISSN (Print) | 2366-2557 |
ISSN (Electronic) | 2366-2565 |
Conference
Conference | 6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022 |
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Country/Territory | Italy |
City | Turin |
Period | 30/08/22 → 2/09/22 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- Anisotropy
- Bounding surface
- Constitutive relations
- Multilaminate
- Sands