Abstract: To improve the comprehensive damping performance of vehicle suspension system with inerter， the system with inerter， spring and damper was modeled. Genetic algorithm was used to optimize the suspension parameters， and the theory of vibration power flow was used to optimize the selection of the damping element bushing. Based on the numerical solution of the model， we discussed the dynamic response of the system before and after the parameter optimization and the influence of the bushing parameters on the power transmission. The research results show that， the parameters obtained by the optimization algorithm can effectively improve the comprehensive damping performance of the system， as compared with the design parameters. The theoretical calculation and simulation data mutually verify the correctness of the model. The optimized selection of the bushing is helpful to further improve the damping performance of the vehicle suspension system.

Key words: vehicle damping, vehicle suspension, inerter, parameter optimization, power flow, dynamics