Abstract
The purpose of this paper is to present a non-steady and non-linear tire model for vehicle dynamic simulation and control under complicated and extreme operating conditions. This model is provided in a semi-analytical form based on the analytical non-steady state model, presented at IAVSD Tyre Conference Feb. 1997. Recently the analytical model is simplified for low frequency range in a way similar to but not exactly the same as that of relaxation length concept. Verified by some steady and non-steady state tire tests, the model is now installed in ADSL driving simulator at Jilin University of Technology of Technology for studying vehicle dynamics and their control systems.