Research on tire steady state cornering properties with modal parameters model

Tire steady state cornering model is an important part in tire mechanics models. Based on static vertical models, the model of tire cornering properties was established with lateral modal parameters which were extracted from lateral excitation experiments. The distribution of the tire side force was obtained by using geometric deformation of contact patch of cornering tires and the principle of modeling tire with experimental modal parameters. The formulas to calculate side force, self aligning torque, cornering stiffness and relaxation length were derived by the distribution. The side force and self aligning torque under different friction coefficients obtained were qualitatively correspond to experimental results in other paper. The calculated results were transformed to the non dimensional results and compared to empirical models Fiala and Bridge Stone models. The results show there is a good matching between them.