A Study on the Tangential Vibration of the Steering Wheel of Passenger Car 912565

The tendency of high speed and low-weight of passenger car may result in the bad feeling of ride comfort and controllability so that new design concept and technology has been required to solve the problems. Especially, the tangential vibration of the steering wheel makes the driver uncomfortable seriously at high speed [1-5]. So to trace the origin, we use T.L.H. coordinate which is a standard in vehicle design, besides the steering wheel system and the frame are modeled by 20 D.O.F. to estimate dynamic characteristics of new cars with possible changes of the locations of linkages and material properties. Generally, the vehicle frame is considered as a rigid body in the vibration analysis of a vehicle. In this study, however, we have modeled the frame as a elastic body. Moreover, the effects of the dry friction in ball joint and tie-rod, king pin inclination and the side slip of the tire are included in the present analysis to supply design parameters required for new vehicles.


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