Structural Optimization and Dynamic Analysis of Vehicle Suspension Seat Coupling System

Suspension damping and seat damping are two effective measures to alleviate road impact and improve riding comfort. Based on the electromechanical similarity theory, the Inerter-Spring-Damper (ISD) damping module is applied to the suspension and seat structure at the same time, and the single wheel model and non-stationary road excitation model of vehicle suspension seat coupling system are established. Through numerical simulation, the vibration response of coupling system under non-stationary road excitation is analyzed in time domain, and the influence of ISD damping module on the comprehensive vibration reduction performance of coupling system is explored; the power spectral density curve of coupling system is analyzed in frequency domain, and the influence of ISD damping module and control strategy on system vibration reduction effect is analyzed. It can be seen from the research results that the introduction of ISD damping module and control strategy can enhance the comprehensive performance of vehicle suspension seat coupling system, and the introduction of ISD damping module and control strategy can effectively attenuate the resonance peak in the sensitive low frequency band of the passenger, the ride comfort of the vehicle is further improved.