ABSTRACT
The movement of a conventional single (isolated) railway wheelset is known as a sinusoidal or hunting motion (Figure 3.1) and was first studied by Klingel in 1883 (Julien and Rocard, 1935).
Klingel simulated the railway wheelset with a bicone. He assumed that the axle moved at a constant speed V in the direction of the track axis while at the same time, at a random moment in time, it is laterally displaced by ‘y’ and rotated by an angle ‘α’.
