FREQUENCY RESPONSE OF TIRES-SLIP ANGLE AND LATERAL FORCE

On the Porsche tire testing rig, rolling wheels were electrohydraulically swivelled around their vertical axis. Frequency responses, ascertained by means of this sinusoidal slip angle input sin wt, will be explained in detail in the present paper. Transient lateral tire properties are shown in a wide range of frequency and speed. Different methods of plotting the results are explained. /GMRL/