A DEM investigation of the shearing behaviour of non-active clays

Arianna Gea Pagano*, Vanessa Magnanimo, Alessandro Tarantino

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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    Abstract

    This paper presents the numerical DEM simulation of shear tests on two-dimensional clay-like specimens. Clay particles are modelled as rod-shaped elements made of spherical elementary units. The contact laws implemented in the adopted DEM framework account for both the mechanical interaction developing between particles in contact, and the long-range electro-chemical interaction in the form of Coulombian attraction/repulsion between charged particles. Virtual specimens for shear testing are obtained via the one-dimensional compression and unloading of clay-like particle assemblies, in order to study the effect of different over consolidation ratios on the macroscopic mechanical behaviour. The DEM framework is challenged against its ability to reproduce qualitatively key aspects of the macroscopic behaviour of normally consolidated and over consolidated clays during shearing, including contractive and dilative behaviour, and monotonic and non-monotonic stress-strain behaviour.

    Original languageEnglish
    Title of host publication7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
    EditorsErdin Ibraim, Alessandro Tarantino
    PublisherEDP Sciences
    ISBN (Electronic)9782759890644
    DOIs
    Publication statusPublished - 25 Jun 2019
    Event7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 - Strathclyde's Technology & Innovation Centre, Glasgow, United Kingdom
    Duration: 26 Jun 201928 Jun 2019
    Conference number: 7
    https://www.is-glasgow2019.org.uk/

    Publication series

    NameE3S Web of Conferences
    Volume92
    ISSN (Print)2555-0403
    ISSN (Electronic)2267-1242

    Conference

    Conference7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
    Abbreviated titleIS-Glasgow 2019
    CountryUnited Kingdom
    CityGlasgow
    Period26/06/1928/06/19
    Internet address

    Fingerprint

    Shearing
    digital elevation model
    Clay
    clay
    shear test
    Charged particles
    unloading
    Unloading
    Consolidation
    consolidation
    Compaction
    compression
    particle
    Computer simulation
    Testing
    simulation

    Cite this

    Pagano, A. G., Magnanimo, V., & Tarantino, A. (2019). A DEM investigation of the shearing behaviour of non-active clays. In E. Ibraim, & A. Tarantino (Eds.), 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 [14003] (E3S Web of Conferences; Vol. 92). EDP Sciences. https://doi.org/10.1051/e3sconf/20199214003
    Pagano, Arianna Gea ; Magnanimo, Vanessa ; Tarantino, Alessandro. / A DEM investigation of the shearing behaviour of non-active clays. 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019. editor / Erdin Ibraim ; Alessandro Tarantino. EDP Sciences, 2019. (E3S Web of Conferences).
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    title = "A DEM investigation of the shearing behaviour of non-active clays",
    abstract = "This paper presents the numerical DEM simulation of shear tests on two-dimensional clay-like specimens. Clay particles are modelled as rod-shaped elements made of spherical elementary units. The contact laws implemented in the adopted DEM framework account for both the mechanical interaction developing between particles in contact, and the long-range electro-chemical interaction in the form of Coulombian attraction/repulsion between charged particles. Virtual specimens for shear testing are obtained via the one-dimensional compression and unloading of clay-like particle assemblies, in order to study the effect of different over consolidation ratios on the macroscopic mechanical behaviour. The DEM framework is challenged against its ability to reproduce qualitatively key aspects of the macroscopic behaviour of normally consolidated and over consolidated clays during shearing, including contractive and dilative behaviour, and monotonic and non-monotonic stress-strain behaviour.",
    author = "Pagano, {Arianna Gea} and Vanessa Magnanimo and Alessandro Tarantino",
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    Pagano, AG, Magnanimo, V & Tarantino, A 2019, A DEM investigation of the shearing behaviour of non-active clays. in E Ibraim & A Tarantino (eds), 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019., 14003, E3S Web of Conferences, vol. 92, EDP Sciences, 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019, Glasgow, United Kingdom, 26/06/19. https://doi.org/10.1051/e3sconf/20199214003

    A DEM investigation of the shearing behaviour of non-active clays. / Pagano, Arianna Gea; Magnanimo, Vanessa; Tarantino, Alessandro.

    7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019. ed. / Erdin Ibraim; Alessandro Tarantino. EDP Sciences, 2019. 14003 (E3S Web of Conferences; Vol. 92).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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    AB - This paper presents the numerical DEM simulation of shear tests on two-dimensional clay-like specimens. Clay particles are modelled as rod-shaped elements made of spherical elementary units. The contact laws implemented in the adopted DEM framework account for both the mechanical interaction developing between particles in contact, and the long-range electro-chemical interaction in the form of Coulombian attraction/repulsion between charged particles. Virtual specimens for shear testing are obtained via the one-dimensional compression and unloading of clay-like particle assemblies, in order to study the effect of different over consolidation ratios on the macroscopic mechanical behaviour. The DEM framework is challenged against its ability to reproduce qualitatively key aspects of the macroscopic behaviour of normally consolidated and over consolidated clays during shearing, including contractive and dilative behaviour, and monotonic and non-monotonic stress-strain behaviour.

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    Pagano AG, Magnanimo V, Tarantino A. A DEM investigation of the shearing behaviour of non-active clays. In Ibraim E, Tarantino A, editors, 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019. EDP Sciences. 2019. 14003. (E3S Web of Conferences). https://doi.org/10.1051/e3sconf/20199214003