Vibration Analysis And Optimization Of Vehicle Powertrain Based On ADAMS

One micro MPV of domestic independent brand has a large share in the market.To enhance product quality,the company cooperates with many universities and institutes.The topic of this paper comes from a cooperation project with the company,which is to study the method of controlling the vibration of the vehicle powertrain.To control the MPV's noise,our lab conducts a number of tests.The test data shows that the vibration noise mainly comes from the powertrain vibration,especially the excitation of the engine speed's 2nd order components.To reduce the amplitude of 2nd order components,this paper completes simulation and optimizes of the system.The dynamic model of vehicle based on ADAMS is introduced firstly.The shaft and drive axles are made flexible on ABAQUS,by which the rigid-flexible model is established and then validated.Firstly,the influence of the key parameters of the powertrain on the natural frequency and forced vibration response are analyzed.Then,the vibration control method of powertrain is studied based on the whole vehicle model.The double-mass flywheel,torsional vibration damper and drive shaft sliding spline are simulated,and the results show that the modified schemes can effectively reduce the amplitude of the 2nd order component and the winding vibration of the rear axle housing.