Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/106012
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dc.contributor.authorGan, Bing-Zhengen_US
dc.contributor.authorChiew, Sing-Pingen_US
dc.contributor.authorLu, Yongen_US
dc.contributor.authorFung, Tat-Chingen_US
dc.date.accessioned2019-09-20T06:19:45Zen
dc.date.accessioned2019-12-06T22:02:53Z-
dc.date.available2019-09-20T06:19:45Zen
dc.date.available2019-12-06T22:02:53Z-
dc.date.issued2019-
dc.identifier.citationGan, B.-Z., Chiew, S.-P., Lu, Y., & Fung, T.-C. (2019). The effect of prestressing force on natural frequencies of concrete beams – A numerical validation of existing experiments by modelling shrinkage crack closure. Journal of Sound and Vibration, 455, 20-21. doi:10.1016/j.jsv.2019.04.030en_US
dc.identifier.issn0022-460Xen_US
dc.identifier.urihttps://hdl.handle.net/10356/106012-
dc.description.abstractThis paper investigates the effect of prestressing force on the natural frequencies of reinforced concrete beams. From a pure theoretical point of view, such effects in different prestressing conditions appear to involve no ambiguity; however, in practice contradictory observations have been reported in existing research publications. Theoretical studies showed that natural frequencies would be decreasing or unchanged in different scenarios. On the other hand, some experiments that were conducted on prestressed concrete beams indicated an increasing trend of the natural frequencies with the prestressing force. This paper is aimed to provide a systematic explanation of the reasons causing the discrepancies and propose a coherent framework for the prediction of the natural frequencies under a prestressed condition. Numerical simulations using finite element model are carried out to simulate the influence of prestressing force on natural frequencies with the existence of the shrinkage cracks. The results demonstrate that such shrinkage-type cracks inside the concrete indeed tend to close when the prestressing force is applied, and this in turn increases the bending stiffness and consequently results in an increase of the natural frequencies of the beams.en_US
dc.format.extent21 p.en
dc.language.isoenen_US
dc.relation.ispartofJournal of Sound and Vibrationen_US
dc.relation.ispartofseriesJournal of Sound and Vibrationen
dc.rights© 2019 Elsevier. All rights reserved. This paper was published in Journal of Sound and Vibration and is made available with permission of Elsevier.en_US
dc.subjectNatural Frequencyen_US
dc.subjectPrestressing Forceen_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleThe effect of prestressing force on natural frequencies of concrete beams – A numerical validation of existing experiments by modelling shrinkage crack closureen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.identifier.doi10.1016/j.jsv.2019.04.030-
dc.description.versionAccepted versionen_US
dc.identifier.volume455en_US
dc.identifier.spage20en_US
dc.identifier.epage31en_US
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