DYNAMIC PROCESSES CAUSED BY TRACK UNEVENNESSES IN BRAKED RAILWAY VEHICLES

Abstract

Unevennesses always present in railway tracks give rise to vibrations in the vehicles moving along the rails. In vehicles equipped with direct f'riction-brakes, vertical exciting effects act upon the sprung vehicle parts through the brake suspension system with the intervention of friction-forces acting upon the wheel-sets when the brake gear is in action. In this paper, the formation of a dynamic model is described which is suitable for the examination of exciting effects transmitted through the brake suspension system, and the description of the system is given as required for digital simulation taking into consideration a two-axle vehicle equipped with block-brakes. The results obtained can be applied directly to the case of bogie vehicles.