Abstract
SUMMARY Three alternative theoretical models of the dynamic behaviour of railway track in the frequency range 50–6000 Hz are described. Using these models various physical phenomena of importance to rolling noise generation are pointed out, and the advantages and short-comings of the three models are compared. Finally, laboratory measurements are described in which the vertical and lateral dynamic stiffnesses of rail fastener systems has been measured under preload in the range 100–1000 Hz.
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