Structural Optimization Design Of Glassy Carbon Hybrid Wind Turbine Blade And Analysis Of Its Aeroelastic Characteristics

The blade is one of the important components of wind turbine.The design of the blade of wind turbine will directly determine the performance of the wind turbine.The design of the blades mainly includes the structural design of the blades and the aerodynamic shape design.The structural design of the blades mainly includes the structural division of the blades along the chord and the layering structure design of the blades.The aerodynamic profile design of the blade is mainly the selection of the blade airfoil along the spreading rectangle,the distribution of chord length and twist Angle,and the design of the pre-bending profile.There is a coupling relationship between the structural design of the blade and the aerodynamic shape design of the blade,which influences each other and directly determines the load,deformation,aerodynamic performance of the blade,as well as the annual power generation of the whole blade.Therefore,it is of practical engineering value to carry out the optimization design of wind turbine blades with glass composite laminate structure and the analysis of their air-to-elastic characteristics.In this paper,the basic aerodynamic theory of wind turbine blades is analyzed and studied,and the design and research of wind turbine blades with glassy carbon mixture and low wind speed are discussed.Then,according to the basic aerodynamic theory of wind turbine blades,the layered structure and aerodynamic shape design of wind turbine blades are parameterized,so as to calculate the aerodynamic performance of the blades and the annual generating capacity of wind turbine.By the parametric expression of the blade structure and aerodynamic shape,with the aid of MATLAB and ANSYS APDL software,build 54 m 2 mw low wind speed wind power blade finite element model,then carries on the cross section structure characteristics,load and structure strength analysis comparison,in order to verify the reliability of the modeling method,provide the foundation for later blade optimization design.Finally,in the existing 54 m 2 mw aerodynamic shape and structure of the Blade,on the basis of the objective function is to minimize the total weight of the Blade,the Blade girder and trailing edge to strengthen parts of the layer structure is optimized,with the aid of GH of leaf Blade and ANSYS software,the strength,stiffness,quality,load and elastic characteristics were analyzed,and compared theoriginal 54 m 2 mw wind-power blades,wind-power blades optimized design on the premise of meet the stiffness and strength of blades of wind power,total leaf quality significantly decreases,and optimize the Blade in the gas spring deformation and dynamic load were decreased significantly,The optimized blade has good aeroelastic stability.The design theory and method of glassy carbon hybrid wind turbine blades proposed in this paper provide reference and basis for the large-scale and lightweight design of wind turbine blades with low wind speed in China.