Modal Analysis of a Discrete Tire Model with a Contact Patch and Rolling Conditions Using the Finite Difference Method

Obtaining the modal parameters of a tire with ground contact and rolling conditions represents challenge due to complex vibration characteristic behaviors that cause distortion tire’s symmetry bifurcation phenomena natural frequencies. An in-plane rigid–elastic-coupled model was used examine 200 DOF finite difference method (FDM) analysis accuracy under non-ground non-rotating conditions. The discrete modified include patch restriction, centrifugal force Coriolis effect, covering range from 0 300 Hz. As result, influence rotating on frequencies modes were obtained through analysis.