Numerical Analysis of Passenger Car Wheel Suspension Models in a Vertical Test of an Axle

Abstract

The paper is a continuation of ongoing research focused on evaluation of the magnitude of passenger car body roll (around longitudinal axis) and pitch (around transverse axis) for slalom and braking manoeuvres. Data from experimental runs will be compared with numerical simulation of a passage of the modelled vehicle. In the previous output, the authors performed an analysis of the current state along with presenting the most relevant kinematic parameters that affect the dynamic behaviour of the vehicle and described the simulation tool used. Furthermore, they carried out measurements and put forward the results of the measured kinematic parameters of the vehicle (Alfa Romeo 156) that is intended for the simulations. In the current work, they set out to describe other important wheel geometry parameters in the theoretical part and in the practical part to monitor the characteristics of a wheel camber alteration in the course of the vertical test of axle. The findings resulting from this work are particularly essential for the development companies when observing comparable kinematic parameters. A predictive nature of the program will allow the authors in future work to simulate vehicle braking with different deceleration input values, which would be problematic in the case of real braking.