Journal
VEHICLE SYSTEM DYNAMICS
Volume 48, Issue 9, Pages 1021-1042Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00423110903248694
Keywords
wheel; rail; Green's functions; parametric resonance; Doppler effect
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Funding
- NURC (the National University Research Council) [1699]
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This paper herein describes the interaction between a simple moving vehicle and an infinite periodically supported rail, in order to signalise the basic features of the vehicle/track vibration behaviour in general, and wheel/rail vibration, in particular. The rail is modelled as an infinite Timoshenko beam resting on semi-sleepers via three-directional rail pads and ballast. The time-domain analysis was performed applying Green's matrix of the track method. This method allows taking into account the nonlinearities of the wheel/rail contact and the Doppler effect. The numerical analysis is dedicated to the wheel/rail response due to two types of excitation: the steady-state interaction and rail irregularities. The study points out to certain aspects regarding the parametric resonance, the amplitude-modulated vibration due to corrugation and the Doppler effect.
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