大型风电机组轮毂疲劳分析方法的研究  

RESEARCH ON FATIGUE ANALYSIS OF THE HUB OF WIND TURBINE

作　　者：陈棋 翁海平 吴晨[2] 

机构地区：[1]风力发电系统国家重点实验室,浙江运达风电股份有限公司,杭州310012 [2]浙江机电职业技术学院,杭州310053

出　　处：《太阳能学报》2015年第9期2263-2268,共6页Acta Energiae Solaris Sinica

基　　金：国家科技支撑计划(2012BAA01B01)

摘　　要：基于风电机组轮毂有限元分析模型,对兆瓦级风电机组轮毂疲劳损伤进行研究。利用叶素动量理论和惯性载荷计算得到动态疲劳载荷谱,结合轮毂材料力学性能,计算得出S-N曲线。有限元分析结果表明,多平均应力S-N曲线能较好地应用于平均应力修正,且当轮毂表面主应力方向有变化时,使用关键面法疲劳损伤模型分析更合适。以兆瓦级风电机组为例,对轮毂进行疲劳计算,得到具有较高指导意义的疲劳分析方法。The fatigue damage of hub of MW level wind turbine was studied based on finite element model for the hub of wind turbine. Dynamic fatigue load spectrums were calculated by applying the blade element momentum theory. S-N curve was calculated, according to the mechanical material properties, Analysis showed that the multi-mean S-N curve can be used to mean stress correct. And the critical plane fatigue damage model was more suitable for the variation of principal stress direction. The fatigue damage of the hub of MW level wind turbine was calculated and the fatigue analysis methods with more practical value in engineering application were achieved.

关 键 词：轮毂 疲劳分析 S-N曲线 疲劳损伤模型 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程]