VERIFICATION OF A TRAM WHEEL NEW PROFILE DYNAMIC BEHAVIOR

Tomasz Staśkiewicz; Bartosz Firlik

Tomasz Staśkiewicz Poznan University of Technology, Faculty of Machines and Transport
Bartosz Firlik Poznan University of Technology, Faculty of Machines and Transport

Keywords: wheel/rail interaction, multi-body simulation

Abstract

This paper is concerned about verification of a tram wheel new profile on multi-body simulation basis. The profile was obtained in an optimization process, which objective function was reduction of gaps occurring between points of contact with rail. The following
parameters were checked: derailment coefficient Y/Q, wheelset lateral displacement, number of contact points and wear index. The aim of this work was to determine whether the new wheel profile is suitable for Polish tram networks and if its performance is enhanced in comparison to other profiles being applied. Simulation rides were carried out on tracks with measured geometry. It was found out, that the new profile had significantly better wear properties, but the ride safety was controversial.

Keywords:
wheel/rail interaction, multi-body simulation