VolverOn the study of train-track dynamic interactions caused by rail welds on discrete supported rails
Fecha
2014-06-15Autor
Correa García, Nekane 
García Vadillo, Ernesto
Santamaría Manrique, Javier
Gómez López, Josu
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Wear 314(1-2) : 291-298 (2014)
Resumen
The paper studies the influence of rail weld dip on wheel-rail contact dynamics, with particular reference to freight trains where it is important to increase the operating speed and also the load transported. This has produced a very precise model, albeit simple and cost-effective, which has enabled train-track dynamic interactions over rail welds to be studied to make it possible to quantify the influence on dynamic forces and displacements of the welding geometry; of the position of the weld relative to the sleeper; of the vehicle's speed; and of the axle load and wheelset unsprung mass. It is a vertical model on the spatial domain and is drawn up in a simple fashion from vertical track receptances. For the type of track and vehicle used, the results obtained enable the quantification of increases in wheel-rail contact forces due to the new speed and load conditions.
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Excepto si se señala otra cosa, la licencia del ítem se describe como This is the author’s version of a work that was accepted for publication in Wear. Changes resulting from the publishing process, such as editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication.
A definitive version was subsequently published in WEAR, VOL. 314, ISSUES 1-2, pp. 291-298, 2014 doi: 10.1016/j.wear.2013.11.044