The field testing for the determination of railway track vertical dynamic forces, as one of railway vehicle acceptance procedures, would be expensive, complex and time consuming. Alternatively, the use of some formulas to calculate these forces could cause the errors. The advanced simulation techniques can improve this and can be taken as a substitution of test work or simple calculation. In this case, significant savings of time and money and, more importantly, the safe operation can be achieved. A rail vehicle-track interaction dynamics model has been applied to determine the track vertical dynamic force due to rail dip defect, which is required in railway vehicle acceptance procedure. The model was validated using the field measurement data of rail dip defects and accelerations of a vehicle axlebox. The simulated dynamic forces - the P2 forces have been compared with those calculated using a well-known formula. Their difference and the formula's limitation have been discussed. The effects of the rail dip defect and the vehicle speed on the track vertical dynamic force have also been investigated.
Use of simulation in determination of railway track vertical dynamic forces in railway vehicle acceptance procedure
2009
14 Seiten, 14 Bilder, 1 Tabelle, 10 Quellen
Conference paper
English
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