When studying the dynamic behaviour of a railway track, the accurate modelling of the behaviour of railpads is important. Here a fractional derivative railpad modelis included in a railway track model. The response of the track model to a force traversing the track at a constant speed is calculated by use of a time integration method. Both a constant traversing force and a force modelled as a stochastic process are studied. For comparison an ordinary railpad railpad model with a discrete elastic spring and a discrete viscous damper in parallel is also used in the track model. The calculated displacements when using the two diffrent models are similar. A non-linear railpad model is also implemented, and is found to result in a slightly different response.
A fractional derivative railpad model included in a railway track model
Ein Schienenunterlagenmodell mit partiellen Ableitungen eingeschlossen in einem Eisenbahnschienenmodell
Journal of Sound and Vibration ; 212 , 5 ; 889-903
1998
15 Seiten, 12 Bilder, 3 Tabellen, 22 Quellen
Aufsatz (Zeitschrift)
Englisch
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