The aim of the paper is to investigate the influence of the railpad stiffness on vehicle/track interaction and corrugation growth. For the structural dynamics of vehicle and track a time domain model is used which includes all relevant contact non-linearities. A simple wear model enables profile development calculations to be undertaken in the time domain by closing the feedback loop between a short-term dynamical process (structural dynamics) and a long-term damaging process (wear). The initial profile is taken from measurements of a ground rail. lt is found that stiffer railpads lead to higher corrugation growth. The parametric excitation from passing sleepers is found to be important. For the chosen operational values this wavelength-fixing mechanism dominates the so-called final profiles of profile development calculations.
The influence of railpad stiffness on wheelset/track interaction and corrugation growth
Der Einfluß der Schienenlagersteifigkeit auf die Rad-Schiene-Wechselwirkung und Welligkeitsvergrößerung
Journal of Sound and Vibration ; 227 , 5 ; 935-948
1999
14 Seiten, 10 Bilder, 1 Tabelle, 10 Quellen
Aufsatz (Zeitschrift)
Englisch
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