Simulation of dynamic responses of vehicle-track system for detection of track short wave defects

January 1, 2010 in

Conference Paper


Author
Maria Molodova

Co-authors
Zili Li, Rolf Dollevoet

Theme(s)


Conference
8th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2009)
Year: 2009
Location: Florence, Italy

Keywords
axle box acceleration, finite-element simulations, squats, thermite welds

Link or Download
Not available

Abstract

The track technical state can be assessed with the aid of axle box acceleration, which can be a measure of the short track defects like squats, welds with poor finishing quality, insulated joints, corrugation etc. To determine a relation between the acceleration characteristics and the track defects, the dynamic responses of the vehicle-track system at defects were investigated through the finite-element modeling. The axle box acceleration at a squat and a thermite weld were simulated. The results agree with the measurements in magnitude and frequency content of axle box acceleration.