Validation of a FEA tire model for vehicle dynamic analysis and full-vehicle real-time proving ground simulations

摘要

A tire model and its interface performance with road surface plays a major role in vehicle dynamics analysis and full-vehicle real-time proving ground simulations. The successful tire model must be able to support the vehicle weight, provide vehicle control and stability, transfer various forces and torques from road/tire interaction to a vehicle chassis/suspension system. The dynamic effects in terms of tire stiffness and internal damping characteristics in impact loading conditions must also be accounted for in the model. A Finite Element Analysis (FEA) tire model is established and its performance is validated using LS/DYNA3D analysis code simulating the radial and lateral static stiffness test conditions, the one-meter dynamic free-drop test condition and the rolling cornering stiffness. The analysis results are compared with available test data and a generic empirical formula.