Discrete element modeling of vibration compaction effect of the vibratory roller in roundtrips on gravels

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dc.contributor.authorWu, Kai
dc.contributor.authorSun, Weichen
dc.contributor.authorLiu, Songyu
dc.contributor.authorHuang, Haibo
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderNational Key Research and Development Program of Chinaen
dc.contributor.funderFundamental Research Funds for the Central Universitiesen
dc.date.accessioned2020-05-22T08:53:09Z
dc.date.available2020-05-22T08:53:09Z
dc.date.issued2020-05-04
dc.description.abstractThis paper aims to study the vibration compaction mechanism of the vibratory roller on gravels using a two-dimensional discrete element method. The roadbed model was established by gravel particles with irregular shapes, which was closer to reality. The performance parameters of the vibratory roller, such as operating frequency and rolling velocity, were investigated to explore their influences on the operating efficiency of the vibratory roller in roundtrips. The frequencies of 15 Hz and 17 Hz were proved to be the optimal frequency and resonance frequency in the current simulations, respectively. The vibratory roller could achieve a better vibration compaction effect with less power consumption at the optimal frequency. In addition, the number of roundtrips and power consumption should be considered in the selection of the optimal rolling velocity. The movement direction and the contact force distribution of gravels were illustrated by the displacement field, velocity field, as well as the contact force chains. Our results provide a better understanding of the mechanical behavior of gravel particles and their interactions with the vibratory roller.en
dc.description.sponsorshipNational Natural Science Foundation of China (No. 51608112); National Key Research and Development Program of China (No. 2016YFC0800201); Fundamental Research Funds for the Central Universities (No. 2242019k30039)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationWu, K., Sun, W., Liu, S. and Huang, H. (2020) ‘Discrete element modeling of vibration compaction effect of the vibratory roller in roundtrips on gravels’, Journal of Testing and Evaluation, 49(5), pp.3869-3884. https://doi.org/10.1520/JTE20190910en
dc.identifier.doi10.1520/JTE20190910en
dc.identifier.eissn1945-7553
dc.identifier.endpage3884en
dc.identifier.issn0090-3973
dc.identifier.issued5en
dc.identifier.journaltitleJournal of Testing and Evaluationen
dc.identifier.startpage3869en
dc.identifier.urihttps://hdl.handle.net/10468/10015
dc.identifier.volume49en
dc.language.isoenen
dc.publisherASTM Internationalen
dc.rights© 2020, ASTM International. All rights reserved.en
dc.subjectRolleren
dc.subjectDiscrete element methoden
dc.subjectPorosityen
dc.subjectOptimal frequencyen
dc.subjectVelocityen
dc.subject~Geography - Journal Articles~en
dc.titleDiscrete element modeling of vibration compaction effect of the vibratory roller in roundtrips on gravelsen
dc.typeArticle (peer-reviewed)en
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