COMPOSITES SCIENCE AND ENGINEERING ›› 2022, Vol. 0 ›› Issue (7): 20-24.DOI: 10.19936/j.cnki.2096-8000.20220728.003

• BASIC STUDY • Previous Articles     Next Articles

Optimization design of ply structure of wind turbine blade based on strain energy

ZHAO Xiong-xiang1, SUN Peng-wen2*, LI Jian-dong3   

  1. 1. Energy Technology Center of Inner Mongolia, Hohhot 010010, China;
    2. School of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;
    3. The Fourth Branch, Inner Mongolia First Machinery Group Co., Ltd., Baotou 014030, China
  • Received:2022-04-08 Online:2022-07-28 Published:2022-08-23

Abstract: The blade performance is directly related to the service life of wind turbine, and the ply parameters are one of the key factors to determine the blade performance. The stiffness of the structure can be reflected by the magnitude of strain energy. The expression of strain energy of composite shell structure is deduced in this paper. From the view of engineering point, taking a 1.5 MW blade as the object and the minimum structural strain energy as the objective function, adopting the hierarchical optimization strategy, considering the strength and quality characteristics of the blade, the optimization mathematical model of ply parameters is established. The optimized ply angle, ply thickness distribution and ply stacking sequence are obtained by solving. The results show that the quality of the optimized blade is reduced, while the static stiffness and strength are improved. The effectiveness of the method is verified.

Key words: ply parameters, strain energy, optimization design, mathematical models, wind turbine blade, composites

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