Validation of a high frequency three-dimensional tyre model

A high frequency three-dimensional tyre model based on the elastic field equations has been presented previously by Larsson [1]. This model makes it possible to calculate the response caused by a force in both the radial and tangential directions at high frequencies, including the local deformation at the excitation point. Now results from this tyre model have been compared with measured data. The effect of the measurement equipment has been included in the model and the model is demonstrated and validated against measured radial and tangential point and transfer mobilities. The agreement is good for radial point mobilities, capturing the local behaviour at the excitation point. The radial transfer mobilities also agree well with measured data. The tangential point and transfer mobilities also show good agreement with measured data in characteristics and levels, if the boundary conditions are changed. Finally, the benefits and limitations of the models are discussed.