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DC Field | Value | Language |
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dc.contributor.author | Zhao, T | - |
dc.contributor.author | Collins, PEF | - |
dc.date.accessioned | 2024-04-22T17:19:56Z | - |
dc.date.available | 2024-04-22T17:19:56Z | - |
dc.date.issued | 2024-03-06 | - |
dc.identifier | ORCiD: Tao Zhao https://orcid.org/0000-0003-2828-6314 | - |
dc.identifier | ORCiD: Philip E.F. Collins https://orcid.org/0000-0002-4886-9894 | - |
dc.identifier | 100115 | - |
dc.identifier.citation | Zhao, T. and Collins, P.E.F. (2024) 'Modelling the brittle rock failure by the quaternion-based bonded-particle model in DEM', Rock Mechanics Bulletin, 3 (2), 100115, pp. 1 - 9. doi: 10.1016/j.rockmb.2024.100115. | en_US |
dc.identifier.uri | https://bura.brunel.ac.uk/handle/2438/28844 | - |
dc.description | A CC BY or equivalent licence is applied to that at least the Author Accepted Manuscript (AAM) arising from this submission, in accordance with the grant's open access conditions. The research data are publicly available online at: https://doi.org/10.17633/rd.brunel.25117811. | en_US |
dc.description.abstract | This paper presents an investigation of brittle rock failure by the quaternion-based bonded-particle model in discrete element method (DEM). Unlike traditional approaches that utilize Euler angles or rotation matrices, this model employs unit quaternions to represent the spatial rotations of particles. This method simplifies the representation of 3D rotations, providing a more intuitive framework for modelling complex interactions in granular materials. The numerical model was validated by the uniaxial compression tests on rock, with good agreement with well-documented experimental data in terms of the rock uniaxial compression strength (UCS) and failure mode. During loading, the rock sample demonstrated a linear-elastic response at an axial strain of smaller than 0.45%. However, as internal bond breakage accumulated, this linear relationship weakened, and the stress-strain curve began to deviate from its initial linear trajectory. The bond breakage and the overall deformation of the rock were primarily controlled by the shear bonding force. The UCS was achieved at an axial strain of 0.625%, at which point the internal shear bonding force chains were predominantly aligned vertically. The brittle failure occurred when the internal damage of solids nucleated to form an interconnected failure plane, accompanied by a sharp rise in the internal damage ratio. The area of failure plane increased with the loading strain rate, gradually transforming the failure pattern from the local damage to a complete fragmentation. | en_US |
dc.description.sponsorship | This research was supported by the UK Engineering and Physical Sciences Research Council (EPSRC) New Investigator Award (Grant No. EP/V028723/1) and the Royal Society, Sino-British Fellowship Trust International Exchanges Award (No. IES∖R2∖202023). | en_US |
dc.format.extent | 1 - 9 | - |
dc.format.medium | Electronic | - |
dc.language | English | - |
dc.language.iso | en_US | en_US |
dc.publisher | Elsevier on behalf of KeAi | en_US |
dc.rights | Copyright © 2024 Chinese Society for Rock Mechanics & Engineering. Publishing services by Elsevier B.V. on behalf of KeAi Co. Ltd. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/). | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.subject | brittle failure | en_US |
dc.subject | quaternion | en_US |
dc.subject | DEM bonded model | en_US |
dc.subject | uniaxial compression test | en_US |
dc.subject | rate dependent | en_US |
dc.subject | internal damage | en_US |
dc.title | Modelling the brittle rock failure by the quaternion-based bonded-particle model in DEM | en_US |
dc.type | Article | en_US |
dc.date.dateAccepted | 2024-03-06 | - |
dc.identifier.doi | https://doi.org/10.1016/j.rockmb.2024.100115 | - |
dc.relation.isPartOf | Rock Mechanics Bulletin | - |
pubs.issue | 2 | - |
pubs.publication-status | Published | - |
pubs.volume | 3 | - |
dc.identifier.eissn | 2773-2304 | - |
dc.rights.license | https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.en | - |
dc.rights.holder | Chinese Society for Rock Mechanics & Engineering | - |
Appears in Collections: | Dept of Civil and Environmental Engineering Research Papers |
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FullText.pdf | Copyright © 2024 Chinese Society for Rock Mechanics & Engineering. Publishing services by Elsevier B.V. on behalf of KeAi Co. Ltd. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/). | 1.84 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License