Study On The Motorcycle Dynamic Characteristic Based On ANSYS

With the globalization of market and mechanical industries, the mechanical manufacturing industry of our country develops quickly. After years of development, motorcycle manufacturing industry has become a pillar industry of the national economy. However, the motorcycle industry is faced with challenges, mainly from two aspects:Firstly, meet the needs of the customers. Designers must consider motorcycle safety and improve passengers’comfort in the fierce market competition. People who buy motorcycles must consider some main factors:the motorcycle’s the qualities of security, stabilization and passage. Secondly, the production enterprise to the bold innovation, make an effort to develop motorcycle related products, lower the cost of development, improve the motorcycle development efficiency and decrease unnecessary prototype vehicle test. Thus, to solve the vibration problem has become urgent affairs which puzzle our motorcycle manufacture enterprise for a long time.This dissertation regards the motorcycle frame for research object, and the Finite Element Analyze has been used to analyze the characteristic of the vibration of the frame. Firstly, the finite element model is set up with NX6.0and NASA for the pro processing; the free model analysis is completed by ANSYS. Finally, the influence of engine on the dynamic characteristics of frame and the matching result of frame with the excitations from engine and road are analyzed. Based on the analysis results, the frame is modified to improve modal characteristic. The modal characteristic of frame is improved obviously after modification. It provides the important basis of solving the vibration of the motorcycle and has some theoretical significance and important practical value.