Abstract
This paper established the nonlinear dynamic model of finished automobile to study the influence of suspension structural parameters, automotive braking and steering on the vehicle driving comfort and handling stability. The simulation results show that in the vehicle steering process, the body roll changed indirectly the tire lateral force, which had the impacts of yaw and lateral movement, and the interaction between the suspension and steering between systems is very significant especially under condition of the uneven road excitation. When the peak of the tire steering angle increased, the roll angle of vehicle body became larger and larger, followed by the change of body posture and the deterioration of ride comfort. With the increase of the steering angle, the lateral acceleration of the vehicle became larger and larger, and even resulted in tire skidding, thus reducing the driving safety of the vehicle.
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