The Structure And Properties Study Of Rubber Damped Torsional Vibration Absorber

According to the research and application status of rubber torsional vibration damper, the structure and properties research of rubber torsional damper is become much more significant. The rubber torsional damper is widely used in automobile engine for its advantages of simple structure and low manufacture cost. The paper is based on the background of batch production. The structure of torsional vibration damper is studied, including three technological parameters: axial run out of gear, slip torque and the force that pushing out.In this paper, the structure of a common used rubber torsional damper is analysed, we can find that the TVD is composed of inertia ring, hub and rubber. The finite element(FE) model is established from the geometric model by using finite element software. Firstly, Two basic rubber tension experiment are carried out, ET and PT experiment, according to relative references, to obtain the rubber material parameters. The experimental datas are dealed by using the least squares method and the material constants for Mooney-Rivlin model and Ogden model are obtained. Under the assumption that the change of rubber’s pressure is very small, some tests and finite element calculation have been done. According to the results of the experiment and theoretic calculation, the coefficient of friction is calculated. At last, the accuracy of the model is verified by energy method.The common structure of TVD is straight type and drum type. The results indicate that there is relativity between the press-in force and axial bounce. Two finite-element models of straight type TVD and drum type TVD have two different press-in forces、slip torque and the pushing-out forces. As a result, the drum type TVD is better than straight type TVD. So the research target is drum type TVD.Because of the complicated shape outline and numerous parameters of the drum type TVD. B-spline has been choosed to expression the TVD’s structure. There are three important parameters : the scale of straight line, minimum interspaces and compression ratio of rubber. The orthogonal table was designed based on the theory of orthoplan experiment. Based on the results,the remarkably influencing factors of each index were found out and the optimal parameters group is achieved. The scale of straight line is 45%, minimum interspaces is 0.88 mm and compression ratio of rubber is 32%. In addition, the most significant factors is compression ratio of rubber. The experimental validation will be conducted for optimization results. Optimization results can meet the technical requirements very well.