COMPUTER SIMULAITON OF RAIL VEHICLE-TURNOUT DYNAMIC INTERACTION WITH MECHANCIAL IMPERFECTIONS

This paper presents some aspects of modeling of dynamic interaction between conventional railway car and track, taking mechanical imperfections into consideration. The imperfections may relate to deviations of geometric parameters against their nominal values or shapes. In this approach, the deviations are described for the single standard turnout and for the wheelsets of the railway car. In order to appreciate the imperfections, the mathematical model and computer package have been elaborated. The package collaborates with the Matlab-Simulink environment. Several simulation results are presented to recommend the usability of the approach. They imply a conclusion that specific turnout parameters and analyzed deviations of some of them create a vital cause of the dynamic interaction growth between vehicle and track. Dynamic response to mechanical imperfections is shown with the aid of wheel-rail forces.