Damping of roll vibrations of vehicle suspension

Abstract

Small forced vibrations of an axle model of independent suspensions having four degrees of freedom are studied. The exact analytical solution of the generalised Lagrange equation enables one to produce 3D plots of the normalised amplitudes of forced vibrations versus frequency and excitation ratio or phase difference of the road inputs. The analysis of these plots exhibits some deficiency in damping of roll vibrations of conventional vehicle suspensions. The possibilities of improvement are discussed.

• axle model
• vertical dynamics
• forced vibrations
• damping
• frequency
• amplitude

Acknowledgements

Thanks are due to Jürgen Kälberer, the chief designer of the Mosler EXP/1 Concept, for the support and helpful discussions.