A SEMI-EMPIRICAL, THREE-DIMENSIONAL TYRE MODEL FOR ROLLING OVER ARBITRARY ROAD UNEVENNESS

In this paper a three-dimensional effective road surface description is introduced and a new three-dimensionnl enveloping tyre model is proposed. This new enveloping tyre model is used in combination with the well-known rigid ring dynamic tyre model to simulate both tyre in-plane and out-of-plane forces and moments. Simulation results of the tyre rolling over several oblique cleats have been compared with measurements for both the quasi-static rolling tyre and the tyre impacting cleats at high velocities. It is shown, by comparing simulation results with measurements for both cases, that the proposed model works rather well. For the covering abstract see ITRD E122482.