Computational Mechanics Research and Support for Aerodynamics ...

= active roll torque
= suspension roll damping rate.
k =suspension roll stiffness
k b = vehicle frame torsional stiffness
k t = tire roll stiffness
= vehicle coupling roll stiffness
= vehicle coupling yaw stiffness
= absolute roll angle of sprung mass.
= absolute roll angle of unsprung mass
́ ́ = roll moment of inertia of sprung mass, measured about origin of coordinate system
́ ́ = yaw-roll product of inertia of sprung mass, measured about origin of coordinate system
́ ́ = yaw moment of inertia of total mass, measured about origin of coordinate system
= = partial derivative of net tire yaw moment with respect to sideslip angle.
̇ =
̇
= partial derivative of net tire yaw moment with respect to yaw rate.
= = partial derivative of net tire yaw moment with respect to steer angle.
m s = Sprung mass,
h = height of center of sprung mass, measured upwards from roll center
m = total mass
U = forward speed
̇= yaw rate
= partial derivative of net tire lateral force with respect to sideslip angle
= sideslip angle
̇ =
̇
= partial derivative of net tire lateral force with respect to yaw rate
= = partial derivative of net tire lateral force with respect to steer angle
TRACC/TFHRC Y1Q3 Page 56