A micromechanical numerical analysis for a triaxial compression of granular materials

V. Magnanimo; L. La Ragione

doi:10.1063/1.4812161

A micromechanical numerical analysis for a triaxial compression of granular materials

V. Magnanimo, L. La Ragione

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

1 Citation (Scopus)

Abstract

We focus on a triaxial compression at constant pressure in which a granular material, after an isotropic preparation, is sheared in a small range of monotone deformation. The aggregate is made by identical, elastic, spheres that interact through a non central contact forces. Because of the loading condition the material is transversely isotropic. Through a numerical analysis we show that aggregates with same pressure and porosity behave differently depending on the initial coordination number (i.e. the average number of contacts per particle). The relation of stress, volume change, elastic moduli and microstructure with the initial contact network is investigated.

Original language	English
Title of host publication	Powders and Grains 2013
Subtitle of host publication	Proceedings of the 7th International Conference on Micromechanics of Granular Media
Editors	Aibing Yu, Kejun Dong, Runyu Yang, Stefan Luding
Publisher	AIP
Pages	1234-1237
Number of pages	4
ISBN (Print)	978-0-7354-1166-1
DOIs	https://doi.org/10.1063/1.4812161
Publication status	Published - 1 Aug 2013
Event	7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013 - Sydney, Australia Duration: 8 Jul 2013 → 12 Jul 2013 Conference number: 7 http://www.pg2013.unsw.edu.au/

Publication series

Name	AIP Conference Proceedings
Publisher	AIP Publishing LLC
Volume	1542
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013
Abbreviated title	Powders & Grains
Country	Australia
City	Sydney
Period	8/07/13 → 12/07/13
Internet address	http://www.pg2013.unsw.edu.au/

Keywords

Anisotropy
DEM
Microstructure

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10.1063/1.4812161

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Magnanimo, V., & La Ragione, L. (2013). A micromechanical numerical analysis for a triaxial compression of granular materials. In A. Yu, K. Dong, R. Yang, & S. Luding (Eds.), Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media (pp. 1234-1237). (AIP Conference Proceedings; Vol. 1542). AIP. https://doi.org/10.1063/1.4812161

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abstract = "We focus on a triaxial compression at constant pressure in which a granular material, after an isotropic preparation, is sheared in a small range of monotone deformation. The aggregate is made by identical, elastic, spheres that interact through a non central contact forces. Because of the loading condition the material is transversely isotropic. Through a numerical analysis we show that aggregates with same pressure and porosity behave differently depending on the initial coordination number (i.e. the average number of contacts per particle). The relation of stress, volume change, elastic moduli and microstructure with the initial contact network is investigated.",

keywords = "Anisotropy, DEM, Microstructure",

author = "V. Magnanimo and {La Ragione}, L.",

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booktitle = "Powders and Grains 2013",

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note = "7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013, Powders & Grains ; Conference date: 08-07-2013 Through 12-07-2013",

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Magnanimo, V & La Ragione, L 2013, A micromechanical numerical analysis for a triaxial compression of granular materials. in A Yu, K Dong, R Yang & S Luding (eds), Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. AIP Conference Proceedings, vol. 1542, AIP, pp. 1234-1237, 7th International Conference on Micromechanics of Granular Media, Powders and Grains 2013, Sydney, Australia, 8/07/13. https://doi.org/10.1063/1.4812161

A micromechanical numerical analysis for a triaxial compression of granular materials. / Magnanimo, V.; La Ragione, L.

Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media. ed. / Aibing Yu; Kejun Dong; Runyu Yang; Stefan Luding. AIP, 2013. p. 1234-1237 (AIP Conference Proceedings; Vol. 1542).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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N2 - We focus on a triaxial compression at constant pressure in which a granular material, after an isotropic preparation, is sheared in a small range of monotone deformation. The aggregate is made by identical, elastic, spheres that interact through a non central contact forces. Because of the loading condition the material is transversely isotropic. Through a numerical analysis we show that aggregates with same pressure and porosity behave differently depending on the initial coordination number (i.e. the average number of contacts per particle). The relation of stress, volume change, elastic moduli and microstructure with the initial contact network is investigated.

AB - We focus on a triaxial compression at constant pressure in which a granular material, after an isotropic preparation, is sheared in a small range of monotone deformation. The aggregate is made by identical, elastic, spheres that interact through a non central contact forces. Because of the loading condition the material is transversely isotropic. Through a numerical analysis we show that aggregates with same pressure and porosity behave differently depending on the initial coordination number (i.e. the average number of contacts per particle). The relation of stress, volume change, elastic moduli and microstructure with the initial contact network is investigated.

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KW - Microstructure

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ER -

A micromechanical numerical analysis for a triaxial compression of granular materials

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