SENSITIVITY ANALYSIS OF THE INFLUENCE OF A TIRE CONTACT SURFACE SHAPE IN TROLLEYBUS VERTICAL DYNAMICS

Abstract

Vertical dynamic properties of the ŠKODA 21 Tr low-floor trolleybus were investigated on an artificial test track when driving with a real vehicle and when simulating driving with a multibody model on a virtual test track. Driving on the artificial test track was aimed at determining the vertical dynamic properties of the real trolleybus, and on such basis, the computer trolleybus models were verified. Time histories and extreme values of the relative deflections of air springs are monitored. The influence of the tire radial characteristics is determined on the basis of measurements on contact surfaces of different shapes that are evaluated.