元件参数对动力吸振型车辆ISD悬架振动响应特性的影响分析

o study the isolation matching mechanism of the vehicle ISD suspension parameters, a dual-mass vibration system of four-elements ISD suspension system based on the dynamic vibration absorber was established. The amplitude frequency characteristic and root-mean-square of the vehicle body acceleration, suspension deflection and tire dynamic load are analyzed，respectively. The results show that, the increase of the stiffness of the main spring and the damping coefficient will change the original three formants to two formants. The increasing of the stiffness of the vice spring and the inertance will change the original two formants to three formants. The root-mean-square of the vehicle body acceleration is mainly influenced by the stiffness of the main spring and the damping coefficient. The root-mean-square of the suspension deflection is mainly affected by the four parameters. The root-mean-square of the tire dynamic load is mainly affected by the damping coefficient. The results and conclusions will provide a theoretical reference for the matching of the component parameters of the ISD suspension.