The SWIFT tyre model : overview and applications

The Magic Formula is a very well known tyre model, which is typically applied in vehicle handling simulations. This paper summarises the developments to extend the validity range to higher frequencies (up to 60 Hz), short wavelength excitation and rolling over obstacles. The issues addressed are the dynamics of the tyre belt, contact slip model and enveloping properties. The new tyre model has been validated extensively using experimental results which show that the extended demands can be met. Finally some application examples are given.