Simulation And Analysis Of Vehicle Ride Comfort And Optimization Of Suspension Parameters

Vehicle ride comfort is one of the evaluation indexes of vehicle NVH performance, now people pay more attention to the vehicle ride comfort research. We can improve the vehicle ride comfort through the adjustment of vehicle suspension parameters.This paper summarizes the evolution process of vehicle ride comfort and multi-body dynamics and the basic theory of ADAMS software, and introduces the method of modeling and simulation of ADAMS/CAR.This paper builds up a whole multi-body dynamics model including suspension, tires, steering, people-seat and etc. The author estimates the natural frequency of fore-after body, and simulates the ride comfort and does the evaluation, and then checks whether this vehicle's ride comfort is ideal or not.The author selects the stiffness of spring and the damp of damper of suspension as the variables, and does the design of experiment and optimization. The reliability analysis for the result of determinate optimization is done by using Monte Carlo method. And then the author checks up the result of optimization by doing the vehicle ride comfort simulation, and compares it with the simulation result above. The result indicates that the optimization can improve the ride comfort to some extent.