风力机叶片后缘梁褶皱的维修及结构安全性评估  

Repair and Structural Safety Assessment of Wind Turbine Blades with Trailing UD Wrinkle

作　　者：毛建晖 李秀海 MAO Jianhui;LI Xiuhai(Guangdong Mingyang New Energy Material Technology Co.,Ltd.,Zhongshan 528437)

机构地区：[1]广东明阳新能源材料科技有限公司,中山528437

出　　处：《玻璃纤维》2025年第1期38-45,共8页Fiber Glass

基　　金：内蒙古自治区“揭榜挂帅”项目“适应高海拔低温型陆上大型国产化风电机组研制”。

摘　　要：通过对后缘梁褶皱进行维修以及维修后叶片的结构安全性评估进行研究,选取某后缘梁断裂的叶片为研究对象,首先分析后缘梁断裂的原因,接着对叶片进行维修;然后建立叶片有限元模型,通过有限元仿真分析了叶片的屈曲稳定性、纤维间失效、叶片疲劳等,评估了维修后叶片的结构安全性;最后进行叶片全尺寸摆阵疲劳测试。结果表明:叶片后缘梁断裂是由于褶皱缺陷导致的,维修方案符合GL规范,维修后的叶片屈曲、纤维间失效、叶片疲劳安全系数均大于1,叶片结构安全,维修后的叶片通过摆阵疲劳测试。Through the repair of trailing UD wrinkles and the structural safety assessment of the blade after repair,a blade with fractured trailing UD was selected as the research object.First,the cause of the fractured trailing UD was analyzed,and then the blade was repaired.After that,a finite element model of the blade was established,and the buckling stability,inter-fiber failure,and blade fatigue were analyzed through the finite element simulation,and the structural safety of the repaired blade was evaluated.Finally,a full-size edgewise fatigue test of the blade was conducted.The results show that the blade trailing UD fracture was caused by wrinkle defects.The repair plan met GL specifications,the blade buckling,inter-fiber failure,and blade fatigue safety factor were all higher than 1 after repair.The blade structure was safe.The repaired blade passed the edgewise fatigue test.

关 键 词：风力机叶片 褶皱 维修 结构安全性 有限元仿真 摆阵疲劳 

分 类 号：TQ171.777.77[化学工程—玻璃工业]