Strength Optimization of Wind Turbine Generator Blade of 3D Woven Fiber Composites

摘要

Homogenization method was combined with finite element method for a three-dimensional numerical analysis on the effective modulus of the braided composite,which may be scientifically predicted,the results compared with the experimental data.Optimization design of wind turbine blade is to meet certain design criteria: material consumption minimization,to ensure that the local and overall stability of the blade structure,blade structure to meet the appropriate requirements of strength and stiffness requirements.In the theory of the finite element method,on the basis of the blade airfoil,a finite element model was built for structural analysis under working conditions.Aerodynamic load,inertia and gravity suffered by the blade was calculated.Blade model structure under static working conditions in the three types of loads was obtained for the optimization design direction.