Abstract
SUMMARY A linear technique based on Fourier Transforms is presented to calculate the dynamic response of railway track and vehicles to non-sinusoidal irregularities on the running surfaces of wheel and rail. The model has been validated tentatively by comparison of calculation with data measured in a field experiment with a variety of irregular wheels and types of track. Calculation underestimates the difference in sleeper bending moment and overestimates the difference in contact force arising from the use of stiff and resilient railpads. An example is given in which the model is used to help in design of track by indicating the relative importance of different damage mechanisms.
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