The development of super-large wind turbines will lead to the contradiction between the blade quality and structural performance requirements of blades. Therefore
referring to the leaf vein structure of plant blade
a bionic internal rib configuration for 15 MW wind turbine blade is proposed
and combined with the pavement design to realize the lightweight and structural reinforcement of the blade design. The modal
stiffness
strength and stability of the blade are analyzed by the one-way fluid-solid coupling. The results show that the bionic internal rib configuration can improve the blade flapwise and torsion stiffness
avoiding the collision between the blade and the tower
but the edgewise stiffness is reduced; the surface stress of the bionic blade is improved compared with that of the conventional blade
but they do not reach the limit of the material; the buckling factor of the bionic blade is improved
and the overall buckling of the blade does not occur
so it meets the stability requirements.
关键词
Keywords
references
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