Stiffness And Gear Impact Of Gear Meshing Analysis On Wind Turbine Gear System

Growth gear system is a core component of wind turbine, the working conditions have a direct impact on the efficiency of wind turbines, Wind-up gear transmission is generally time-varying dynamic random work under load, Vibration and shock caused by these dynamics load will increased wear and pitting phenomena such as gear systems. This paper will as wind turbine increasing gear a starting point, focusing on working conditions at wind turbine, shock, vibration impact on the gear stiffness.One of the main criteria for gear design is contact strength design of the gear. According wind turbine gear meshing characteristics make the following work:First, The use of parametric modeling method to establish three-dimensional modeling of the gear. By APDL language modeling gears. After meshing, the use of the sweep function to ensures accurate grid division,As the same time defines a set of nodes. Finally, The definition of the gear contact, Friction and other conditions considered, The calculated results of the stress and strain of gear.Second, Calculated using the ANSYS LS-DYNA software module explicit dynamics. Use of contact the impact of nonlinear dynamics theory, And consider the role of friction of the gear, Calculation of stress and strain derived growth dynamic meshing gear teeth systems,The results indicate that the process of meshing gears gear stress and strain with a single gear law bidentate alternately engaging showed some regularity.Third, Organize the results were compared with theoretical calculations. Gear meshing stiffness calculation of stress and strain data obtained through the gears, according to the gear mesh stiffness variation time history chart, We can see that the stiffness curve presented in the course of certain rules in gear. Integrated mesh stiffness changes during certain regularity gear teeth meshing.Finally, By comparing the selected shichuan formula gear meshing stiffness for verification. The results prove that the theoretical value of the analog values have some errors,but can basically reflect the trends gear mesh stiffness.