Since the vehicle's rotating parts are accelerated rotationally during its translational acceleration, in addition a rotational resistance force has to be overcome. In order to determine this force, the mass inertia moments of the rotating parts have to be reduced to the driven axle. Analogous to the calculation of the translational acceleration, we obtain:
MT = -θred·φ
The rotational resistance force is hence given by:
where: θred: inertia moment of all rotating parts, reduced to the drive shaft
φ: angle acceleration of the drive wheel
rdyn: dynamic wheel radius
from:
