This thesis theoretically and experimentally studies the transient force and moment characteristics of tyres involving large wheel slip and camber, and develops a tyre model which is capable of describing those characteristics.nRecent computer technology has considerably improved vehicle handling and ride comfort. Some examples of its application to vehicles are active suspension, anti-lock brake system, active rear wheel steering, and so on. These applications directly improve vehicle dynamics. The computer technology also improves vehicle dynamics indirectly. It supports the development of vehicles by analyses and simulation studies. In either way, a good understanding of tyre characteristics is indispensable because vehicle dynamics are strongly affected by the tyre characteristics. The study of the tyre involves many complicated and difficult aspects: asymmetric and large deformations, anisotropic and complex structure, sliding and friction, rotating object, heat, wear, and so on.nThis study can be divided into three parts: theoretical study, experiment and the development of a tyre model for computer simulation. The stretched string tyre model is chosen in this study because its capability of describing transient force and moment characteristics and simplicity are in good balance.
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