A Study Of Torsional Vibration On Power Driveline Of The Vehicle

With the structural lighter of the vehicle and the comfortable higher required, the torsional vibration on the power driveline of the vehicle is becoming more important and is primary factor of the construct vibration and sound of the vehicle. But at long time, designers only consider the construct intensity when designing the power driveline of vehicle. There are no efficient control measures for reducing torsional vibration of vehicle to them. Generally, designers make simple dynamic model or depend on experiential design to get parameters by more tests and repeated amendment. These methods not only use a great deal of manpower and material resources, but also spend much time, and the control effect maybe is not satisfied at last. With rapid development of the computer technology, the technologies of numeric simulation are widely applied to the product design. At same time, some new research methods and theories are applied to solve the problems of the torsional vibration control. The integrated 3D model of the power driveline was made in this paper. By the ADAMS multi-bodies dynamic theory and the finite element analysis method, this 3D model was discrete and the concentration mass dynamic model with the multi-degrees of free was made. Then the inherent characters and the imposed vibration response to the torque of the engine for the power driveline were analyzed and the dynamic response characteristic of the power driveline were got. On the basis of the dynamic analysis, the structure parameters of the power driveline were modified, then the general influence rules to the vibration characteristic have been found by the optimum modification theory. The simulation results indicate that the influence trend and notability of the structure modification are relative to the modified position.