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

January 1, 2010 in

Conference Paper

Maria Molodova

Zili Li, Rolf Dollevoet


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

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

Link or Download
Not available


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.