Zili Li, Rolf Dollevoet
Wear and RCF
8th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems (CM2009)
Location: Florence, Italy
axle box acceleration, finite-element simulations, squats, thermite welds
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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.