Title: Preliminary Study on Rail Corrugation of Rubber Booted Short Sleepers Track
Abstract: The mechanism of rail corrugation on tight curves of rubber booted short sleepers tracks was investigated.Field observations and measurements were conducted.The characteristics of corrugation were obtained and the possible reasons of corrugation were analyzed according to the theory of track structure dynamics.Then a three dimensional FEM track model considering the effect of unsprung mass was established and it was utilized to analyze the relationship between rail corrugation and modal shape and resonance frequency.Finally,the preliminary explanation of corrugation formation was obtained.The effect of unsprung mass on the track response and the forming mechanism of corrugation were studied.The numerical results are in good agreement with the field mearuments.The vertical bending vibrations of rails and rubber booted sleepers relative to the slabs can be easily excited when the vehicle passes the tracks.It is the underlying causes of the 50 mm wavelength corrugation.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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