Modal analysis of the helical gear of the increasing gear box for wind generator

Natural vibration characteristics of the helical gear of the increasing gear box for wind generator has an important influence on the normal use of wind turbine. In order to improve the smooth and reliability of the driven system and improve the design efficiency of helical gear, it is very necessary to the natural frequency of gear by modal analysis. In this paper, the model of helical gear is established by using three-dimensional modeling software PRO/E, and through data exchange interface, the model was converted into ANSYS, then the model analysis was carried out and the low natural vibration frequencies and vibration mode were obtained. This is the basis for the design and optimization of the gear transmission system.