Abstract

Cornering stiffness is usually treated as an equivalent term which presents characteristics of tire-suspension-steering system in developing the lateral force at a given tire slip angle. However, influence of suspension and steering characteristics on the value of cornering stiffness and vehicle dynamics characteristics are not separately considered and analyzed. Therefore, the relation of each suspension, steering and tire with vehicle dynamics characteristics is not obviously known. An analytical compliance model in suspension and steering system is proposed here by considering a component of single A-arm, tie rod, kingpin and steering column. And relation of it with cornering stiffness and vehicle dynamics characteristics based on bicycle model are theoretically derived in this paper.

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