Stress distribution in conical sandpiles formed with ellipsoidal particles

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

Abstract

The properties of a sandpile such as angle of repose and stress distribution are affected by many variables, among which particle shape is one of the most important ones. In this work, ellipsoids which can represent a large range of shapes varying from disk- to cylinder-type are used. The discrete element method (DEM) is employed in order to conduct controlled numerical experiments. The results show that 3D conical sandpiles have similar properties as 2D ones reported in the literature. It demonstrates that particle shape affects the magnitude of the contact force network significantly, with spheres being the smallest. As expected, the pressure distribution underneath sandpiles is featured with a relatively small pressure in the centre, and ellipsoids have a more significant stress dip region than spherical particles.

Original languageEnglish
Title of host publicationEPJ Web of Conferences
Subtitle of host publicationPowders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media
EditorsFarhang Radjai, Saeid Nezamabadi, Stefan Luding, Jean-Yves Delenne
PublisherEDP Sciences
Number of pages4
Volume140
DOIs
Publication statusPublished - 30 Jun 2017
EventPowders and Grains 2017 - Montpellier, France
Duration: 3 Jul 20177 Jul 2017
Conference number: 8th
http://pg2017.org/en/

Conference

ConferencePowders and Grains 2017
CountryFrance
CityMontpellier
Period3/07/177/07/17
Internet address

Cite this

Liu, S., Zhou, Z., Zou, R., & Yu, A. (2017). Stress distribution in conical sandpiles formed with ellipsoidal particles. In F. Radjai, S. Nezamabadi, S. Luding, & J-Y. Delenne (Eds.), EPJ Web of Conferences : Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media (Vol. 140). [06023] EDP Sciences. https://doi.org/10.1051/epjconf/201714006023
Liu, Sida ; Zhou, Zongyan ; Zou, Ruiping ; Yu, Aibing. / Stress distribution in conical sandpiles formed with ellipsoidal particles. EPJ Web of Conferences : Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media. editor / Farhang Radjai ; Saeid Nezamabadi ; Stefan Luding ; Jean-Yves Delenne. Vol. 140 EDP Sciences, 2017.
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title = "Stress distribution in conical sandpiles formed with ellipsoidal particles",
abstract = "The properties of a sandpile such as angle of repose and stress distribution are affected by many variables, among which particle shape is one of the most important ones. In this work, ellipsoids which can represent a large range of shapes varying from disk- to cylinder-type are used. The discrete element method (DEM) is employed in order to conduct controlled numerical experiments. The results show that 3D conical sandpiles have similar properties as 2D ones reported in the literature. It demonstrates that particle shape affects the magnitude of the contact force network significantly, with spheres being the smallest. As expected, the pressure distribution underneath sandpiles is featured with a relatively small pressure in the centre, and ellipsoids have a more significant stress dip region than spherical particles.",
author = "Sida Liu and Zongyan Zhou and Ruiping Zou and Aibing Yu",
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Liu, S, Zhou, Z, Zou, R & Yu, A 2017, Stress distribution in conical sandpiles formed with ellipsoidal particles. in F Radjai, S Nezamabadi, S Luding & J-Y Delenne (eds), EPJ Web of Conferences : Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media. vol. 140, 06023, EDP Sciences, Powders and Grains 2017, Montpellier, France, 3/07/17. https://doi.org/10.1051/epjconf/201714006023

Stress distribution in conical sandpiles formed with ellipsoidal particles. / Liu, Sida; Zhou, Zongyan; Zou, Ruiping; Yu, Aibing.

EPJ Web of Conferences : Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media. ed. / Farhang Radjai; Saeid Nezamabadi; Stefan Luding; Jean-Yves Delenne. Vol. 140 EDP Sciences, 2017. 06023.

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

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AB - The properties of a sandpile such as angle of repose and stress distribution are affected by many variables, among which particle shape is one of the most important ones. In this work, ellipsoids which can represent a large range of shapes varying from disk- to cylinder-type are used. The discrete element method (DEM) is employed in order to conduct controlled numerical experiments. The results show that 3D conical sandpiles have similar properties as 2D ones reported in the literature. It demonstrates that particle shape affects the magnitude of the contact force network significantly, with spheres being the smallest. As expected, the pressure distribution underneath sandpiles is featured with a relatively small pressure in the centre, and ellipsoids have a more significant stress dip region than spherical particles.

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Liu S, Zhou Z, Zou R, Yu A. Stress distribution in conical sandpiles formed with ellipsoidal particles. In Radjai F, Nezamabadi S, Luding S, Delenne J-Y, editors, EPJ Web of Conferences : Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media. Vol. 140. EDP Sciences. 2017. 06023 https://doi.org/10.1051/epjconf/201714006023