An FDEM study of particle breakage under rotational point loading

DC FieldValueLanguage
dc.contributor.authorWei, Deheng-
dc.contributor.authorZhao, Budi-
dc.contributor.authorDias-da-Costa, Daniel-
dc.contributor.authorGan, Yixiang-
dc.date.accessioned2021-11-08T14:50:23Z-
dc.date.available2021-11-08T14:50:23Z-
dc.date.copyright2019 Elsevieren_US
dc.date.issued2019-05-01-
dc.identifier.citationEngineering Fracture Mechanicsen_US
dc.identifier.issn0013-7944-
dc.identifier.urihttp://hdl.handle.net/10197/12591-
dc.description.abstractThe most commonly adopted method to test the strength of single sand particles is based on platen experiments. This setup tends to align the loading direction towards the particle minimum axis and provide an upper limit for the breakage stress. This paper numerically bypasses such limitation by using a combined finite and discrete element method (FDEM). FDEM was first validated via a mesh size analysis of a spherical particle and calibrated by in-situ experimental compressions of the single quartz sand particle, where the particle shape was obtained by X-ray micro-computed tomography (XCT) and then imported into the numerical model. Systematic point loading tests were recreated to explore the role of the curvature at contacting points on the breakage behaviour. The simulations allow to probe the same non-spherical particles, i.e., realistic quartz sand and ellipsoid particles, with multiple measurements highlighting the importance of the loading direction, which was inaccessible experimentally. Results show that FDEM can capture not only the crack initiation but also fracture patterns, while taking into account realistic shapes. It is found that the distance between two contact points and their combined curvedness reflecting the particle morphology are the two major factors governing fracture patterns and stresses. When loading is roughly parallel to the minimum principal dimension of particles, the obtained breakage stress and the number of fragments approach the upper limits.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rightsThis is the author’s version of a work that was accepted for publication in Engineering Fracture Mechanics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Engineering Fracture Mechanics (212, (2019)) https://doi.org/10.1016/j.engfracmech.2019.03.036en_US
dc.subjectParticle breakageen_US
dc.subjectPoint loadingen_US
dc.subjectFDEMen_US
dc.subjectComputed tomographyen_US
dc.subjectCrack initiationen_US
dc.subjectCrack evolutionen_US
dc.subjectFracture patternsen_US
dc.subjectEnergy-dissipationen_US
dc.subjectSand particlesen_US
dc.subjectElement methoden_US
dc.subjectFractureen_US
dc.subjectCompressionen_US
dc.subjectCalibrationen_US
dc.titleAn FDEM study of particle breakage under rotational point loadingen_US
dc.typeJournal Articleen_US
dc.internal.authorcontactotherbudi.zhao@ucd.ieen_US
dc.statusPeer revieweden_US
dc.identifier.volume212en_US
dc.identifier.startpage221en_US
dc.identifier.endpage237en_US
dc.identifier.doi10.1016/j.engfracmech.2019.03.036-
dc.neeo.contributorWei|Deheng|aut|-
dc.neeo.contributorZhao|Budi|aut|-
dc.neeo.contributorDias-da-Costa|Daniel|aut|-
dc.neeo.contributorGan|Yixiang|aut|-
dc.date.embargo2021-05-01en_US
dc.description.othersponsorshipAustralian Research Councilen_US
dc.date.updated2020-09-05T21:00:38Z-
dc.identifier.grantidDE150101703-
dc.identifier.grantidDP17010419-
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/3.0/ie/en_US
item.fulltextWith Fulltext-
item.grantfulltextopen-
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