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VALIDATION OF DYNAMIC SIMULATIONS OF RAIL VEHICLES WITH FRICTION DAMPED Y25 BOGIES
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1998
Year
Railway TrafficAutomotive EngineeringVehicle Dynamics (Space Vehicle Dynamics)EngineeringRail TransportAerospace EngineeringMechanicsCivil EngineeringMechanical EngineeringMechanical SystemsY25 BogiesVehicle DynamicAbstract Theoretical ModellingTrain ControlModeling And SimulationY25 BogieStructural MechanicsTransportation Engineering
Abstract Theoretical modelling of a container wagon fitted with Y25 bogies was compared to actual track test data, using the VAMPIRETM Rail Vehicle dynamics modelling 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. The behaviour of the vehicle was very input dependent. It was possible to produce a good correspondence between track test and model results for both vertical and lateral behaviour.