Variation of the Wheel Mass mW
In the figure, the wheel mass is varied first. In reference to the body resonance, this has neither an effect on the position of the body natural frequency nor on its intensity.
In reference to wheel resonance however, a clear increase in the (specific) dynamic wheel load fluctuations is noticeable as a result of the increased wheel mass. This is due to the fact that a larger mass has to be stabilized by unchanged dampers. Consequently, as small a wheel mass as possible is to be aimed at with respect to the dynamic wheel load fluctuations, and hence with regard to driving safety.