典型参数对风电叶片预埋型叶根连接螺栓承载性能的影响  

INFLUENCE ON BOLTS OF WIND TURBINE BLADE ROOT BUSHING CONNECTION BY CONNECTION PARAMETERS

作　　者：白会超[1] 苏少昌 张文伟[1] 邓航[1] BAI Hui-chao;SU Shao-chang;ZHANG Wen-wei;DENG Hang(Zhuzhou Times New Material Technology CO. , Ltd. , Zhuzhou 412007, China)

机构地区：[1]株洲时代新材料科技股份有限公司

出　　处：《玻璃钢／复合材料》2019年第9期38-43,共6页Fiber Reinforced Plastics/Composites

摘　　要：风电叶片叶根连接螺栓承受整个叶片传递的风载荷,其强度和可靠性是保证风力发电机组正常稳定运行的必要条件。本文采用有限元法,分析螺栓预紧力、法兰厚度、螺栓套初始螺纹深度以及螺栓光杆直径等参数对叶根连接螺栓承载性能的影响。结果表明:①降低螺栓预紧力、增加法兰厚度、增大螺栓光杆直径、降低螺栓套初始螺纹深度均可提高叶根连接螺栓的极限承载能力;②增大螺栓预紧力、增加法兰厚度、减小螺栓光杆直径均能提高预埋型叶根连接螺栓的疲劳寿命,相较其他三个参数,增加螺栓套初始螺纹深度对连接螺栓的疲劳寿命影响最小。The influence of typical parameters to the strength of bushing connection bolts is analyzed, such as the thickness of flange, pretension force, the shaft diameter of bolt, and the initial thread depth of bushing. The results show that:①The ultimate bearing capacity of the connection bolt can be increased by reducing the pretension force, increasing the thickness of flange, increasing the shaft diameter of the bolt, and reducing the initial thread depth of bushing;②The fatigue life of connection bolt can be increased by increasing the pretension force, increasing the thickness of the flange and reducing the shaft diameter of bolts. Compared with the three parameters above, increasing the initial thread depth of the busing has the least influence on the fatigue life of the connection bolt.

关 键 词：预埋型 连接参数 连接螺栓 极限强度 疲劳强度 

分 类 号：TB332[一般工业技术—材料科学与工程]