Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (12): 1-6.doi: 10.3969/j.issn.1000-565X.2010.12.001

• Mechanical Engineering •     Next Articles

Bending-Torsion Coupling Design of Spar Cap of Compliant Wind Turbine Blade

Liu Wang-yu  Zhang Yong   

  1. School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2010-03-24 Revised:2010-05-05 Online:2010-12-25 Published:2010-12-25
  • Contact: 刘旺玉（1966-），女，博士，教授，主要从事材料与结构的一体化建模与设计研究． E-mail:mewytiu@scut．edu．cn
  • About author:刘旺玉（1966-），女，博士，教授，主要从事材料与结构的一体化建模与设计研究．
  • Supported by:

    国家自然科学基金资助项目（50975090）

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Abstract:

This paper deals with the bending-torsion coupling design of the spar cap of 1.5MW wind turbine blade by using biased hybrid fibers.The corresponding control parameters are set,and the effects of both the angle and the volume fraction of off-axis carbon fibers on the bending-torsion coupling parameters are analyzed.Theoretical results indicate that the bending-torsion coupling effect is only related to the laminated materials.Simulated results show that（1） either the biased hybrid spar cap or the skin helps to achieve efficient bending-torsion coupling,with the corresponding optimal angles respectively being about 20.0° and 13.0°;and（2）,under the constraints of fiber tensile and compressive strain,interlaminar shear stress and Von Mises stress on layers,the spar cap is of the most excellent sta-tic performance at a volume fraction of off-axis carbon fibers of 45% and an angle of off-axis carbon fibers of 20°.

Key words: wind turbine, compliance blade, spar cap, bending-torsion coupling