Towards more realistic modelling of sand-rubber mixtures considering shape, deformability and micro-mechanics

Title: Towards more realistic modelling of sand-rubber mixtures considering shape, deformability and micro-mechanics
Creator: Asadi, Mohsen; Mahboubi, Ahmad; Thoeni, Klaus
Relation: Canadian Geotechnical Journal Vol. 60, Issue 2, p. 182-197
Publisher Link: http://dx.doi.org/10.1139/cgj-2021-0710
Publisher: Canadian Science Publishing
Resource Type: journal article
Date: 2023
Description: This paper presents realistic DEM simulations of mixtures of sand and rubber grains. The shape of the grains and the deformability of the rubber are accounted for in the model. A set of 1D compression tests and triaxial compression tests are performed on samples with different rubber contents. It is shown that the model can accurately predict the mixture behaviour at macro-scale. The insights from a micro-mechanical analysis of force chain network, coordination number, and side-wall friction indicate that deformability plays a key role in exhibiting realistic behaviour. Finally, a new criterion is presented to determine the limits of sand-like and rubber-like behaviour.
Subject: deformability; discrete element method (DEM); sand-like behaviour; sand–tire mixture; side-wall friction
Identifier: http://hdl.handle.net/1959.13/1484768
Identifier: uon:51424
Identifier: ISSN:0008-3674
Language: eng
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