Optimal Design Of Strength And Stiffness For The Wind Turbine Blade

At present, wind power generation has been already one of the theme of"new energy", comparatively, the development of the blade of wind driven generator is very fast. Its good design, dependable mass and superior capability are determinant which assure wind generating set operate normally. The wing type of the blade design, structure form directly effects the performance and power of wind power device. The blade is the most centre part in fan driven generator, is the most foundation and most key of parts of the vane wheel. So, the quality of the blade decides the stand or fall of the wind driven generator. The wing type of the blade design adopts pre-existing airfoil profile as usual, for example: NACA(4406～4415), Gottingen and so on.The paper made a following operate at the basic of existed theories:1. In the theory of finite element method, on the basis of the existing blade airfoils, using the finite element software ANSYS finite element model, adopting model SHELL63 shell element discretization, built load conditions on finite element model of blade, conducting structural analysis .this paper static analysis;2. Computing aerodynamic force, inertial force and gravity, applying them by three kinds of different modes on the blade respectively. Under three types of working condition, throwing different assemble loads on the blade. Then analyzing establised blade pattern making use of static analysis;3. Carrying on an analysis to the blade structure under three types of working condition, then obtain optimized direction.