The Structural Design And The Study On Dynamic Characteristics Of Dual Mass Flywheel

With the society and the situation of living improving, people are paying more and more attention to comfort. And one of the important impacts on comfort is vibration and noise. And people always take some measures to reduce the vibration and the noise. There are two resources in automobile, one is the road surface random exciting while running; the other is the vibration of the engine while working. The road surface random exciting has great influence on the hands and feet of passengers. And the vibration of the engine transmits the vibration by the car body and the transmission system, and creates noise accordingly. People are thinking of controlling the two kinds of vibration and reducing the voice, and have got some useful ideas and new technology. One of the new technologies is the Two Mass Flywheel (TMF), and this is the research object of this article. DMF appears in the middle 1980's. It has many strong points, and is easy to be used; so many automobile factories begin to pay attention to it. The first DMF appeared in German and Japan, and after it got success, many other countries, such as France, America, English etc., all began to research and develop the DMF. In the early 1990's the technology and products matured, and not only diesel car which was the first kind vehicle using it, but also other vehicles, such as gas engine car, bus, middle and low end car etc., begin to use it. And now in Europe, it is widely used in some kinds of vehicles. But in our country, we just begin to research now. Some factories and universities produced the sample of DMF, but it isn't put into batch production. There are some middle and high end cars that used DMF, but they are all imported. So it is very important and useful to research the DMF. In order to accelerate the step of domestic producing of the DMF, it is particularly important to improve its design method and research more. Because the traditional construction cycle of design method is too long, and it does not suit the market competition, so it is substituted by the modern design method gradually. The technology of CAD/CAE is the important part of modern automobile design methods. It does not depend on object and sample car test, and it can analyze,appraise and optimize the designing from its initial stage. With the development of technology of the computer, its calculation precision is higher and higher; therefore it has been more and more extensively approved, especially after the software ADAMS which is based on the theory of the dynamic of multi-body systems appears. In ADAMS, the computer algorithm can automatically create dynamics...