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

Arianna Gea Pagano; Vanessa Magnanimo; Alessandro Tarantino

doi:10.1051/e3sconf/20199214003

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 proceeding › Conference contribution › Academic › peer-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 language	English
Title of host publication	7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
Editors	Erdin Ibraim, Alessandro Tarantino
Publisher	EDP Sciences
ISBN (Electronic)	9782759890644
DOIs	https://doi.org/10.1051/e3sconf/20199214003
Publication status	Published - 25 Jun 2019
Event	7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 - Strathclyde's Technology & Innovation Centre, Glasgow, United Kingdom Duration: 26 Jun 2019 → 28 Jun 2019 Conference number: 7 https://www.is-glasgow2019.org.uk/

Publication series

Name	E3S Web of Conferences
Volume	92
ISSN (Print)	2555-0403
ISSN (Electronic)	2267-1242

Conference

Conference	7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
Abbreviated title	IS-Glasgow 2019
Country/Territory	United Kingdom
City	Glasgow
Period	26/06/19 → 28/06/19
Internet address	https://www.is-glasgow2019.org.uk/

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10.1051/e3sconf/20199214003Licence: CC BY

e3sconf_isg2019_14003Final published version, 464 KBLicence: CC BY

Cite this

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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",

year = "2019",

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doi = "10.1051/e3sconf/20199214003",

language = "English",

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editor = "Erdin Ibraim and Alessandro Tarantino",

booktitle = "7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019",

address = "France",

note = "7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019, IS-Glasgow 2019 ; Conference date: 26-06-2019 Through 28-06-2019",

url = "https://www.is-glasgow2019.org.uk/",

}

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 proceeding › Conference contribution › Academic › peer-review

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N2 - 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.

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

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