Identification of effective properties of the railway substructure in the low-frequency range using a heavy oscillating unit on the track
2010 (English)In: Archive of applied mechanics (1991), ISSN 0939-1533, E-ISSN 1432-0681, Vol. 80, no 9, 959-968 p.Article in journal (Refereed) Published
As the demand for predictions of train-induced vibrations is increasing, it is essential that adequate parameters of the railway structure are given as input in the predictions. Gathering this information can be quite time-consuming and costly, especially when predictions are required for the low-frequency emission. This article presents a procedure for deriving the effective properties of the foundation under the sleepers of a railway track from measurements taken with a heavy oscillating unit on the track. The unit consists of two masses inside a modified freight car that exert a dynamic force in the range 3-30 Hz on one of the two axles. The ratio of force applied on the axle over the resulting response measured with an accelerometer is studied. The foundation of the sleepers is modelled using a frequency-dependent complex-valued dynamic stiffness.
Place, publisher, year, edition, pages
2010. Vol. 80, no 9, 959-968 p.
Embankment, Flexibility, Railway, Stiffness, Track, Train
IdentifiersURN: urn:nbn:se:kth:diva-9473DOI: 10.1007/s00419-009-0348-4ISI: 000280226000001ScopusID: 2-s2.0-77957869462OAI: oai:DiVA.org:kth-9473DiVA: diva2:114128
QC 20100921. Uppdaterad från submitted till published (20100921).2008-11-062008-11-062010-09-21Bibliographically approved