SWIFT-Tyre: an accurate tyre model for ride and handling studies also at higher frequencies and short road wavelengths
conference paper
As is well known, Magic Formula tyre modelling (MF-Tyre is a part of ADAMS/Tire) allows an accurate and efficient description of tyre-road interaction forces required for any usual vehicle handling simulation. When it comes to modelling of tyre behaviour at higher frequencies and short road obstacles, which are important for vehicle ride assessment, advanced chassis control systems and chassis system vibrations, a more sophisticated approach is required. In close co-operation with the Delft University of Technology and with involvement of nine automotive companies, TNO has developed the SWIFT (Short Wavelength Intermediate Frequency Tyre) model, which is based upon a rigid ring type of tyre model. The SWIFT model is able to describe dynamic tyre behaviour for in-plane (longitudinal and vertical) and out-of-plane (lateral, camber and steering) motions up to about 60 Hz, and for road obstacles with short wavelength. For reasons of accuracy and calculation speed the SWIFT model has been programmed as a semi-empirical model which is derived using advanced physical models and dedicated high frequency tyre measurements to assess speed effects in tyre behaviour.
TNO Identifier
488953
Source title
15th ADAMS European User Conference, 15-17 November, 2000, Rome, Italy
Files
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