Simulation and Test of Ride Comfort of Bus with Air Suspension Based on ADAMS

Based on the theory of multi-body system dynamics and with application of mechanical system simulation software ADAMS,the multi-body system dynamic models of front and rear suspensions of air suspension bus were established.The established models of vehicle virtual prototype includes the models of steering system,engine,body,front and rear tires,etc.With help of the stochastic road input document,the ride comfort and the natural frequency of air spring suspensions of the virtual model were simulated which shows that ride comfort performance is good.The simulation result was compared with road test result of vehicle sample,which verified the reliability of the virtual prototype model.The research shows that virtual test for analyzing ride comfort of vehicle is effective.