风机叶片叶根螺栓位置误差对其连接刚度的影响研究  

Study on the Influence of Position Error of Fan Blade Root Bolt on Its Connection Stiffness

作　　者：邱伟栋 王东阳 陈惠贤[1] 李亚龙 闫占蒋 QIU Wei-dong;WANG Dong-yang;CHEN Hui-xian;LI Ya-long;YAN Zhan-jiang(School of Mechanical and Electrical Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China;Zhejiang Yunda Wind Power Co.,Ltd,Hangzhou 310000,Zhejiang,China)

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050 [2]浙江运达风电股份有限公司,浙江杭州310000

出　　处：《机械研究与应用》2025年第1期21-25,共5页Mechanical Research & Application

基　　金：中央引导地方科技发展资金项目:基于碳达峰碳中和目标的6MW级风电机组用叶片成型的关键技术开发(编号:22ZY1QF002)。

摘　　要：预埋螺栓连接方式是大型风机叶片根部连接的主要形式之一。叶片在装配过程中,由于叶根螺栓位置存在误差而导致其应力状态十分复杂,使得叶根螺栓连接刚度下降并可能导致结构失效。针对以上问题,该文首先建立叶根多螺栓孔位置度误差模型;其次通过Abaqus软件分析影响单个高强度螺栓连接刚度和孔边应力的主要因素;然后研究叶根不同位置螺栓孔误差引起的叶根结合面应力变化状况,找出叶根径向位置误差对其连接刚度的影响规律;最后对叶根螺栓位置误差对其连接刚度的影响进行仿真实验。实验结果表明,满足叶根螺栓连接刚度的最大允差为0.06 mm。相关结论可为叶片数字化制造提供理论指导。Pre-embedded bolt connection is one of the main forms of large wind turbine blade root connection.During the assembly process of blade,the complex stress state caused by position error of blade root bolt leads to decrease in the connection stiffness and produces structural failure.To address the above problems,firstly,the blade root multi-bolt hole positional error model is established;secondly,the influence factors of single high-strength bolt connection stiffness and hole edge stress are analyzed through the Abaqus software;then,the blade root bonding surface stress changes caused by different positional bolt hole errors in the blade root are studied,and the influence law of the radial positional error in the blade root on its connection stiffness is found out;lastly,the effect of the bolt positional error on the connection stiffness of the blade root is simulated.Finally,simulation experiments on the effect of leaf root bolt position error on its connection stiffness are carried out;the results show that the maximum tolerance to meet the leaf root bolt connection stiffness is 0.06 mm,which provides theoretical guidance for the digital manufacturing of blades.

关 键 词：叶片叶根 位置误差 应力变化 连接刚度 

分 类 号：TB332[一般工业技术—材料科学与工程]