TYRE MODEL FOR VERTICAL, LONGITUDINAL AND LATERAL FORCES ON DRIVEN ANGLED TRACTOR WHEELS

摘要

A model is presented which offers a three-dimensional description of the behaviour of off-road tyres. One part of the model deals with vertical dynamics and is based on the characteristic of a non-linear spring and a speed-dependent damper. The second part shows the relationship between the horizontal tyre forces, the slip and the slip angle. The parameters needed for the model are obtained with the help of a flat belt tyre test stand, a shear tester and a single wheel test rig.