兆瓦级风力发电机组轮毂弹塑性分析  

Elastic-plastic Analysis of MW Wind Turbine Hub

作　　者：王秀文 WANG Xiuwen(Jiangsu Goldwind Technology Co.,Ltd.,Yancheng 224000,Jiangsu,China)

机构地区：[1]江苏金风科技有限公司,江苏盐城224000

出　　处：《能源与节能》2021年第11期169-171,共3页Energy and Energy Conservation

摘　　要：针对材料线性分析不能准确计算轮毂应力超出比例极限后的应力应变问题,考虑球墨铸铁力学性能对轮毂应力状态的影响,依据GL 2012 Guideline for the Certification of Wind Turbines(《风力发电机组认证指南》)标准关于塑性应变的规定,采用弹塑性分析方法对兆瓦级风力发电机组轮毂结构进行分析。使用材料真实应力应变曲线,能准确计算出轮毂应力大于比例极限后的受力状态,为风力发电机组轮毂结构强度提供了一种校核方法,对轮毂结构优化设计具有指导意义,为保证轮毂结构强度安全提供理论依据。In order to sovle the inaccurate calculation problem that uses the analysis method of material linear for the hub stress beyond the proportional limit,considering the impact on hub bearing state with mechanical properties,based on the provisions of GL standards about plastic strain,elastic-plastic analysis method is used in hub structure analysis of MW wind turbine.The stress state of the hub after the stress is greater than the proportional limit can be accurate calculation by adopting the true stress-strain curve of the material.Provides a new strength check method for the wind turbine hub structure,and it has guide significance for the structure design of hub.

关 键 词：轮毂 弹塑性 有限元 变浆轴承 

分 类 号：TM614[电气工程—电力系统及自动化]