复合材料科学与工程 ›› 2020, Vol. 0 ›› Issue (9): 5-10.

• 基础研究 •    下一篇

风电叶片预埋型螺栓连接性能研究

龚民1, 倪爱清1, 王继辉1, 秦志文2*   

  1. 1.武汉理工大学材料科学与工程学院,武汉430070;
    2.中国科学院工程热物理研究所中国科学院风能利用重点实验室,北京100080
  • 收稿日期:2019-12-25 出版日期:2020-09-28 发布日期:2020-09-28
  • 通讯作者: 秦志文(1982-),男,博士,助理研究员,主要从事叶片结构强度与复合材料连接方面的研究,caike0208@163.com。
  • 作者简介:龚民(1993-),男,硕士研究生,主要从事树脂基复合材料的结构设计和力学模拟方面的研究。
  • 基金资助:
    国家自然科学基金青年基金项目(51606196);中国科学院战略性先导科技专项(XDA21050600;XDA21050303)

STUDY ON THE PERFORMANCE OF EMBEDDED BOLT CONNECTION OF WIND TURBINE BLADE

GONG Min1, NI Ai-qing1, WANG Ji-hui1, QIN Zhi-wen2*   

  1. 1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;
    2. Institute of Engineering Thermophysics, Chinese Academy of Science, Beijing 100080, China
  • Received:2019-12-25 Online:2020-09-28 Published:2020-09-28

摘要: 建立了风电叶片预埋螺栓套螺栓连接模型,通过有限元软件ANSYS研究预埋螺栓套连接螺栓在受拉、受压和不同大小预紧力等工况下的受力形式及其对螺栓连接性能、载荷系数和疲劳寿命的影响。结果表明:在外载为拉力的情况下,当外载荷小于临界载荷时,螺栓载荷随外载荷线性增加,螺栓系数为定值;当外载荷大于临界载荷时,螺栓载荷系数迅速增高,大大降低螺栓的使用寿命;在外载为压力的情况下,螺栓载荷系数为定值;在满足螺栓使用标准的情况下,预紧力越大,螺栓载荷系数越小,螺栓使用寿命越长。

关键词: 风电叶片, 预埋螺栓, 连接性能, 有限元方法, 复合材料

Abstract: The model of embedded bolt sleeve bolt connection of wind turbine blade is established. Using finite element software ANSYS to study the stress form of embedded bolt sleeve connection bolt under conditions such as tension, compression, and different preload and its influence on load factor and fatigue life. The results show that when the external load is tensile force, when the external load is less than the critical load, the bolt load increases linearly with the external load, and the bolt factor is a fixed value. When the external load is greater than the critical load, the bolt load coefficient increases rapidly, which greatly affects the fatigue life of the bolt. When the external load is pressure force, the bolt load factor is a fixed value. When the bolt service standard is met, the greater the preload is, the smaller the bolt load factor is, the longer the bolt fatigue life is.

Key words: wind turbine blade, embedded bolt, connection performance, finite element method, composites

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