转速对风机叶片和齿轮固有频率的影响  

Influence of rotational speeds on natural frequency of the blade and gear of wind turbine

作　　者：宋中越[1] 李海洋[1] 马姣姣[1] 甄冬[1] 师占群[1] 胡亚欣[1] 

机构地区：[1]河北工业大学机械工程学院,天津300130

出　　处：《机械设计》2017年第11期32-37,共6页Journal of Machine Design

基　　金：河北省高层次人才资助项目(E201200003;E2014100015);天津市应用基础与前沿技术研究计划资助项目(13JCZDJC34400;14JCYBJC42100)

摘　　要：首先阐述固有频率的试验测试方法,针对预应力变化会引起物体固有频率的变化,提出采用仿真分析的方法对风电机组的核心传动部件叶片和齿轮进行固有频率分析,分别建立叶片和齿轮模型,结合风电机组运行工况较复杂的特点,分析了风机叶片和齿轮动态工况下的固有频率及其变化,分析过程中重点研究了旋转预应力对叶片和齿轮固有频率的影响,并对二者的变化规律进行了分析对比。The method for natura l frequency measurement is described firstly, and then according to the variation of prestress may lead to the change of the tested natural frequency, the natural frequency of wind turbine blades and gears are analyzed based on the simulation. The models of blades and gears are built for the natural frequency analysis. Considering the characteristics of complex operating conditions of wind turbine, the natural frequency of blades and gears under dynamic operating conditions are analyzed. The analysis is focus on the effects of rotational prestress on the variation of natural frequency of wind turbine blades and gears, and then the change rules are investigated in details through comparative analysis.

关 键 词：固有频率 旋转预应力 叶片 齿轮 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3