Analysis approach of turnout crossing performance by field measurements and finite element modeling

August 25, 2016 in

Conference Paper


Author
Lizuo Xin

Co-authors
Valeri Markine, Ivan Shevtsov

Theme(s)



Conference
The 24th international symposium on dynamic of vehicles on roads and tracks
Year: August 2015
Location: Graz, Austria

Keywords
field measurements, finite element model, railway turnout crossing

Link or Download
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Abstract

The procedure for analyzing turnout crossing performance is developed in this paper. The experimental and numerical analysis are both conducted to evaluate the dynamic behavior of the crossing and to further improve the crossing performance. Geometry and acceleration measurements are performed on common single turnouts in the Dutch railway network for analyzing the measured crossing performance and providing the input for numerical modeling. Meanwhile, a three-dimensional finite element model of a whole wheelset rolling over the crossing has been developed. The wing rail and crossing nose geometry as well as the wheel geometry have been used in the model. The numerical responses of the model comprise the dynamic contact forces between the wheelset and the crossing, displacements of the wheelset and crossing as well as the local contact stress and strain distributions, by which  the crossing performance is evaluated and the fatigue life of the crossing is predicted. By this approach further improvement of the crossing nose and wing rail geometry can be realized.