Design And Manufacturing Process Research For Small Wind Turbine Blade

With the consumption of fossil fuels and their serious impact on the environment, the wind energy with the advantages of clean and can be recycled for use is growing importance to many countries and they are actively developing and utilizing its wind resource, China is no exception. This paper is based on the requirements of Guangxi Department of Education Technology Project "1kW wind turbine research and development of product" to explore the mothed for design and manufactureing process of small wind turbine blade using of composite materials.The main results achieved are as following:1. According to the classic theory of the wind turbine blade design and using 3D modeling software, the blade's 3-D solid model is established. According to the situation that there are lots of aerofoil data, a suitable modeling method is put out which make the modeling more quickly and accurately.2. Based on the solid model and aerofoil design section respectively, two blade mold design and manufacturing methods are put out. There are different advantages in each of two methods, which can be chosen according to the actual production conditions.3. In order to create high-strength lightweight blade, the key technology of composite material manufacture are analysised and the relevant parameters are identified. Using of strain measurement technology, composite material's strength properties and the elastic constants are determined. It provide material's data for FEM analysis.4. By using ANSYS finite element analysis code, the blade model's static and modal analyses are made. The results of the analysis are used to determine the internal structure and how many layers of the blade. At last, the curve of blade's stress in different wind speed is draw out and the first 10 natural frequencies are get out.5. Introduced the manufacturing process of how complete the blade. At last, we take the static and vibration experiments to blade; the result verified the correctness of finite element analysis and the blade's practicality.