On the target frequency for harvesting energy from track vibrations due to passing trains

dc.contributor.authorCleante, V. G. [UNESP]
dc.contributor.authorBrennan, M. J. [UNESP]
dc.contributor.authorGatti, G.
dc.contributor.authorThompson, D. J.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniveristy of Calabria
dc.contributor.institutionUniversity of Southampton
dc.date.accessioned2019-10-06T15:18:13Z
dc.date.available2019-10-06T15:18:13Z
dc.date.issued2019-01-01
dc.description.abstractThere is an increasing desire to monitor the structural integrity of railway tracks and the supporting ballast and subgrade. Track vibration has been proposed as a potential energy source to power wireless sensors for this purpose. Vibration-based energy harvesting devices generally exploit resonance, and hence need to be tuned to a particular target frequency. Thus, to harvest energy from the vibrations of a passing train, the spectral content of the track vibration needs to be known. This paper describes a fundamental investigation into the factors that govern this spectral content. A simple model of the train and the track, together with data from five trains passing at four different sites are used in this investigation. It is shown that the deflection under an individual wheel effectively acts as a bandpass filter, restricting the acceleration spectrum of sleeper vibration to low frequencies. The train geometry has an important effect on which specific trainload frequency has the largest response amplitude. For the trains studied, it was found that the 7th trainload frequency had the highest amplitude in four out of the five cases. The physical reasons as to why this trainload frequency is the largest are discussed.en
dc.description.affiliationDepartamento de Engenharia Mecânica Universidade Estadual Paulista (UNESP)
dc.description.affiliationDepartment of Mechanical Energy and Management Engineering Univeristy of Calabria
dc.description.affiliationInstitute of Sound and Vibration Research University of Southampton
dc.description.affiliationUnespDepartamento de Engenharia Mecânica Universidade Estadual Paulista (UNESP)
dc.format.extent212-223
dc.identifierhttp://dx.doi.org/10.1016/j.ymssp.2018.05.003
dc.identifier.citationMechanical Systems and Signal Processing, v. 114, p. 212-223.
dc.identifier.doi10.1016/j.ymssp.2018.05.003
dc.identifier.issn1096-1216
dc.identifier.issn0888-3270
dc.identifier.scopus2-s2.0-85047115225
dc.identifier.urihttp://hdl.handle.net/11449/186867
dc.language.isoeng
dc.relation.ispartofMechanical Systems and Signal Processing
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectEnergy harvesting
dc.subjectTrack vibration
dc.subjectTrain-induced vibration
dc.subjectTrainload frequency
dc.titleOn the target frequency for harvesting energy from track vibrations due to passing trainsen
dc.typeArtigo

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