The Motorcycle's Dropping Vibration Experiment Study

Vibration measurement and analysis technology is the important branch of Mechanical dynamics, and it is the universal aspect of the application of the mechanical dynamic engineering. With the development of the science technology, the requirements for the rotating speed, bearing speed, bearing ability, working life-span and so on become higher and higher, and people have more and more thorough understanding on vibration. Therefore, the requirement for the study of vibration measurement and analysis technology become higher and higher.With the market's competition become more and more fierce, the motorcycle's structure intensity and comfortableness become more and more important. So we must pay a attention to the vibration question of the motorcycle. The vibration which engine cause to perplex motorcycle's enterprise is the heavy obstacles of development. How to solve the vibration which engine cause become urgent. At present, in the motorcycle of our country's medium and small arranging amount, the engine connecting with rigidity of the frame. The high frequency vibration forms of motorcycle show as the motorcycle's whole vibration because the engine encourage. Waken engine shake strength become the basic way of reducing vibration. The basic way to weaken force which engine encourage is adding balance axle. The topple moment and the surge of gas become the main factors of vibration. Adopt the way of adding balance axle can't effective controls vibration. At this moment, to study the elasticity connecting between the engine and frame become very important realistic meaning.This text adopt to the theory of elasticity connecting and to use the 200cc motorcycle as the studying target, through going on a large amount of relevant motorcycle' vibration tests, and calculating with finite element analysis, then through compare result and go on study, find out motorcycle vibration issue. Then according to the existing question, to optimum design elasticity connecting, to test elastic coefficient K, to test the frame's natural frequencies, to test engine, to test the whole motorcycle under the engine connecting the frame by rigidity and by elasticity, at last, the vibration problems of motorcycle well be settled. This text starts with solving the vibration problem of motorcycle,Through testing and analyzing the vibration of key spare part and whole car of motorcycle,And compared with the result of finite element analysis, Through to test and analyze the vibration of the motorcycle and we do relatively deep analysis and studied in this technology. We form a set of relatively perfect to issue motorcycle vibration testing and analytical method. To the motorcycle's enterprises, this method has very good theory meaning and value of guiding to test and analyze medium and big arranging motorcycles.