VALIDATION OF DYNAMIC SIMULATIONS OF RAIL VEHICLES WITH FRICTION DAMPED Y25 BOGIES

摘要

Theoretical modelling of a container wagon fitted with Y25 bogies was compared to actual track test data, using the VAMPIRE~TM Rail Vehicle dynamics mdoelling software. The Y25 bogie makes use of load sensitive friction damping, and has highly non-linear behaviour. Elements of the vehicle design which were important in predicting vertical and lateral ride were identified and are described in the paper. Wheel profile, accurate modelling of primary and secondary suspensions, and coefficients of friction of The wheel/rail interface and suspension friction faces, were found to be particularly important to ride Prediction.