ON THE INFLUENCE OF THE TIRE LATERAL ELASTICITY ON THE HEAVE VIBRATIONS OF AN AUTOMOBILE

摘要

In the present paper the heave vibrations of an automobile are investigated in the case of a swing axle suspension. A model of this suspension type is used without considering the displacements as small. We obtain a non-linear system of the differential equations, which is used to study the vibrations during automobile passing over surface with high undulations. Considerations are made about the determination accuracy of the suspension stiffness and suspension damping by testing when the automobile does not move. The motion equations are linearised and the obtained results are compared with those corresponding to the usual ride quarter-car model. It has been found that the tire lateral deformations produced by the track width variation deteriorate the ride comfort and the road holding of an automobile.