Nonlinear vibration modes of the double tracked road vehicle

Free damped oscillations of a double tracked road vehicle with a nonlinear response of the suspension are considered. A 7-DOF nonlinear model is used to analyze dynamics of the suspension with smooth characteristics. Vibration modes of the system and the corresponding skeleton curves are obtained. Nonlinear vibrations of the quarter-car model are considered for the case of non-smooth characteristics of the shock absorber.