风电主齿轮箱动态响应分析

Dynamic analysis of wind turbine gearbox

以某3 MW风电齿轮箱为研究对象,通过导入壳体、齿圈、转架有限元凝聚刚度矩阵,建立基于MASTA的多柔体动力学模型,分析发现箱体在三级齿轮啮合频率附近有最高的动能分布,齿轮箱在高速级齿轮第一阶啮合频率激励下有最大的振动响应,且计算结果和试验测试结果基本符合。该结果可对风电齿轮箱设计阶段进行振动风险规避提供一定计算参考。

By inputting reduced matrix of stiffness and mass,a dynamic model including flexible housing,ring gear and carrier for a 3 MW wind turbine gearbox is established based on MASTA.And analysis results show that the kinetic percentage of housing is maximum near the gear mesh frequency and response is maximum at the 1st mesh frequency of HSS gear.The analysis results show certain agreement with vibration test results.This paper can provide reference for avoiding vibration in gearbox design.