The effect of hydro-mechanical coupling on the onset and orientation of localisation bands in partially saturated soils.
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| Title: | The effect of hydro-mechanical coupling on the onset and orientation of localisation bands in partially saturated soils. |
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| Authors: | Phan, Dat G.1 (AUTHOR), Nguyen, Giang D.1 (AUTHOR) giang.nguyen@trinity.oxon.org, Bui, Ha H.2 (AUTHOR), Bennett, Terry1 (AUTHOR) |
| Source: | International Journal of Plasticity. Mar2023, Vol. 162, pN.PAG-N.PAG. 1p. |
| Subjects: | Waterlogging (Soils), Yield surfaces |
| Abstract: | • The influence of effective stress and suction on bifurcation in partially saturated soils is accounted for in a new thermodynamics-based model. • The cross-coupling terms in the tangent stiffness allow the model to capture the coupled effects of suction and effective stress on the on the onset and inclination of the shear bands. • The model parameters are determined considering the experimentally observed bifurcation characteristics. • The interdependence of all internal variables, and the use of a single yield surface in stress-suction space facilitate the bifurcation analysis for the onset and orientation of localisation bands in various loading and hydraulic states. • The model is sensitive to conditions that favour bifurcation under the effect of hydro-mechanical coupling and dilation. Constant suction triaxial tests on partially saturated soils demonstrate the dependence of the onset and orientation of localisation bands upon different mechanical loading and saturation conditions, in addition to the material properties of soils. This effect of hydro-mechanical coupling, via the combination of effective stress and suction, on the onset and inclination of the shear bands is investigated in this paper using a model with a single yield surface dependent on both stress and suction. The cross-coupling terms in the asymmetric tangent stiffness allow the model to capture the coupled effects of suction and effective stress on the behaviour upon yielding and hence facilitate the bifurcation analysis for the onset and orientation of localisation bands in various loading and hydraulic states. The model parameters are determined with its experimental bifurcation characteristics, showing the sensitiveness of conditions that favour bifurcation under the effect of hydro-mechanical coupling and dilation. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 161989951 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The effect of hydro-mechanical coupling on the onset and orientation of localisation bands in partially saturated soils. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Phan%2C+Dat+G%2E%22">Phan, Dat G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nguyen%2C+Giang+D%2E%22">Nguyen, Giang D.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> giang.nguyen@trinity.oxon.org</i><br /><searchLink fieldCode="AR" term="%22Bui%2C+Ha+H%2E%22">Bui, Ha H.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bennett%2C+Terry%22">Bennett, Terry</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Plasticity%22">International Journal of Plasticity</searchLink>. Mar2023, Vol. 162, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Waterlogging+%28Soils%29%22">Waterlogging (Soils)</searchLink><br /><searchLink fieldCode="DE" term="%22Yield+surfaces%22">Yield surfaces</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • The influence of effective stress and suction on bifurcation in partially saturated soils is accounted for in a new thermodynamics-based model. • The cross-coupling terms in the tangent stiffness allow the model to capture the coupled effects of suction and effective stress on the on the onset and inclination of the shear bands. • The model parameters are determined considering the experimentally observed bifurcation characteristics. • The interdependence of all internal variables, and the use of a single yield surface in stress-suction space facilitate the bifurcation analysis for the onset and orientation of localisation bands in various loading and hydraulic states. • The model is sensitive to conditions that favour bifurcation under the effect of hydro-mechanical coupling and dilation. Constant suction triaxial tests on partially saturated soils demonstrate the dependence of the onset and orientation of localisation bands upon different mechanical loading and saturation conditions, in addition to the material properties of soils. This effect of hydro-mechanical coupling, via the combination of effective stress and suction, on the onset and inclination of the shear bands is investigated in this paper using a model with a single yield surface dependent on both stress and suction. The cross-coupling terms in the asymmetric tangent stiffness allow the model to capture the coupled effects of suction and effective stress on the behaviour upon yielding and hence facilitate the bifurcation analysis for the onset and orientation of localisation bands in various loading and hydraulic states. The model parameters are determined with its experimental bifurcation characteristics, showing the sensitiveness of conditions that favour bifurcation under the effect of hydro-mechanical coupling and dilation. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Plasticity is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ijplas.2023.103551 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Waterlogging (Soils) Type: general – SubjectFull: Yield surfaces Type: general Titles: – TitleFull: The effect of hydro-mechanical coupling on the onset and orientation of localisation bands in partially saturated soils. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Phan, Dat G. – PersonEntity: Name: NameFull: Nguyen, Giang D. – PersonEntity: Name: NameFull: Bui, Ha H. – PersonEntity: Name: NameFull: Bennett, Terry IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 07496419 Numbering: – Type: volume Value: 162 Titles: – TitleFull: International Journal of Plasticity Type: main |
| ResultId | 1 |
