大型风电齿轮箱耦合固有特性仿真分析  

Simulation and Analysis of Coupled Natural Characteristic of Large Wind-Turbine Gearbox

作　　者：许洪斌[1] 吴灿元 杨长辉[1] 

机构地区：[1]重庆理工大学汽车零部件先进制造技术教育部重点实验室,重庆400054 [2]重庆理工大学机械工程学院,重庆400054

出　　处：《机械设计与制造》2014年第5期192-194,共3页Machinery Design & Manufacture

基　　金：国家科技支撑计划课题(2012BAA01B05);国际科技合作专项项目(2013DFA70730);重庆市科技攻关计划项目(CSTC2012GG-YYJSB90002)

摘　　要：风电齿轮箱是风电机组的重要组成部分,其振动特性会影响整个机组的运行,因此研究齿轮箱系统的固有特性具有重要意义。在大型风电齿轮箱三维实体模型的基础上,采用弹簧模拟轴承的方式把传动系统和箱体耦合起来,建立该齿轮箱齿轮—传动轴—轴承—箱体系统耦合非线性动力学有限元模型,运用Lanczos法对齿轮箱系统进行耦合模态分析得到系统固有频率和固有振型。通过计算齿轮啮合频率分析得出齿轮箱系统在高阶振型中产生共振现象,为大型风电齿轮箱的优化设计提供理论依据。Wind-turbine gearbox is an important part of wind-turbine, its vibration characteristic has an impact on the normal operation of the whole system, so the research on natural characteristics of gearbox is of great significance. Based on the three-dimensional solid model of large wind turbine gearbox and coupling transmission system and gearbox together by simplifying bearings with springs, the coupled nonlinear dynamical FE model containing gears-shafts- bearings-housing for the gearbox was built comprehensively to perform the coupled modal analysis of the whole gearbox with Lanczos method, and the natural frequency and the form of vibration was obtained. The result showed resonance phenomenon in higher modes was produced by analyzing gear mesh frequency and result of modal simulation, which provided useful theoretical basis for optimization design of wind turbine gearbox system.

关 键 词：风电齿轮箱 固有特性 啮合频率 

分 类 号：TH16[机械工程—机械制造及自动化] TH122