Abstract
Neglecting the change of vehicle speed for short period of time during cornering with traction/braking at reasonably high speed, the concept of quasi-steady state cornering is introduced to investigate the effects of traction/braking on vehicle handling characteristics. The equivalent front and rear wheel side slip angles during the cornering are obtained taking the effects of the longitudinal load transfer and the longitudinal force on the tire cornering stiffness into account. Considering the compliance steers and toe changes due to tire horizontal forces and suspension stroke respectively, the geometrical description of the circular turning is introduced and the cornering behavior with traction/braking is examined. The equivalent cornering stiffness is also introduced and the two degree-of-freedom equations of vehicle motion with the compliance steers and the toe changes are derived. The transient effects of the traction/braking on the vehicle handling dynamics are studied introducing the yaw rate response transfer function from the equations of motion.
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