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THE INFLUENCE OF RAILPAD STIFFNESS ON WHEELSET/TRACK INTERACTION AND CORRUGATION GROWTH

✍ Scribed by H. ILIAS

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
249 KB
Volume
227
Category
Article
ISSN
0022-460X

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✦ Synopsis

The aim of the paper is to investigate the in¯uence of the railpad stiness 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 pro®le 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 pro®le is taken from measurements of a ground rail. It is found that stier railpads lead to higher corrugation growth. The parametric excitation from passing sleepers is found to be important. For the chosen operational values this wavelength-®xing mechanism dominates the so-called ®nal pro®les of pro®le development calculations.

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