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

Abstract

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

CLC Number:

TB332

GONG Min, NI Ai-qing, WANG Ji-hui, QIN Zhi-wen. STUDY ON THE PERFORMANCE OF EMBEDDED BOLT CONNECTION OF WIND TURBINE BLADE[J]. Composites Science and Engineering, 2020, 0(9): 5-10.

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