Time-frequency analysis of railway bridge response in forced vibration
2016 (English)In: Mechanical systems and signal processing, ISSN 0888-3270, E-ISSN 1096-1216, Vol. 76-77, 518-530 p.Article in journal (Refereed) PublishedText
This paper suggests the use of the Continuous Wavelet Transform in combination with the Modified Littlewood-Paley basis to analyse bridge responses exited by traversing trains. The analysis provides an energy distribution map in the time-frequency domain that offers a better resolution compared to previous published studies. This is demonstrated with recorded responses of the Skidträsk Bridge, a 36 m long composite bridge located in Sweden. It is shown to be particularly useful to understand the evolution of the energy content during a vehicle crossing event. With this information it is possible to distinguish the effect of several of the governing factors involved in the dynamic response including vehicle's speed and axle configuration as well as non-linear behaviour of the structure.
Place, publisher, year, edition, pages
Academic Press, 2016. Vol. 76-77, 518-530 p.
Bridge, Dynamics, Forced vibration, Railway, Vehicle, Wavelet, Bridges, Frequency domain analysis, Railroads, Vehicles, Vibrations (mechanical), Wavelet transforms, Continuous Wavelet Transform, Energy distributions, Nonlinear behaviours, Time frequency analysis, Time frequency domain, Vibration analysis
IdentifiersURN: urn:nbn:se:kth:diva-186903DOI: 10.1016/j.ymssp.2016.01.016ISI: 000374812200032ScopusID: 2-s2.0-84957922879OAI: oai:DiVA.org:kth-186903DiVA: diva2:928826
FunderEU, FP7, Seventh Framework Programme, IAPP-GA-2011-286276
QC 201605162016-05-162016-05-162016-05-30Bibliographically approved