DYNAMISCHE PRÜFUNG DES EISENBAHNOBERBAUS IM SYSTEM FAHRBAHN-FAHRZEUG

Abstract

The article deals with the dynamic model of the railway track superstructure in the track-vehicle system when the dynamic model includes besides the track the vehicle, too. After introducing the problems of the track-vehicle system, the present method used for dimensioning tracks is represented and analysed, and finally the well applicable discrete dynamical plane model for tracks is presented. This model consists of rail, sleeper, ballast, simplified model of moving vehicle, and important elastic and damping effects occurring in and between them. The mathematical handling of this system is complicated by the involvment of a vehicle model, however, this is its greatest advantage, too, i.e. the real conditions can be approached more precisely than with a dynamic model describing only the track.