Influence of the hydraulic shock absorbers model in trolleybus multibody simulations on the suspension deformations and comparison with the experimental results

Abstract eng:
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 mathematical model along a virtual test track. Driving along the artificial test track was aimed at determining vertical dynamic properties of the real trolleybus and on the basis of them at verifying mathematical models. This paper is an introduction to solving the given problems and deals with comparison of the relative displacements between the axles and the chassis frame measured in the course of driving along the test track with the real empty trolleybus and the relative deflections of air springs determined in the course of simulations with the existing empty trolleybus multibody model. Three variants of the hydraulic shock absorbers model were successively considered for simulations.

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