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A Study on Structural Design and Test of Micro Scale Composite Material Blade for Wind Turbine

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摘要

The purpose of the present study is to design a micro scale composite wind turbine blade. The blade airfoil of FFA-W3-211 was selected to meet Korean weather condition. The skin-spar-foam sandwich type structure was adopted for improving buckling and vibration damping characteristics. The design loads were determined at wind speed of 25m/s, and the structural analysis was performed to confirm safety and stability from strength, buckling and natural frequency using the finite element analysis method. The prototype was manufactured using the hand-lay up method and it was experimentally tested using the three point concentrated loading method. In order to evaluate the design results, it was compared with experimental results. According to comparison results, the estimated results such as compressible stress, max tip deflection, natural frequency and buckling load factor were well agreed with the experimental results.
机译：本研究的目的是设计微尺度复合风力涡轮机叶片。选择FFA-W3-211的叶片翼型以满足韩国天气状况。采用皮肤泡沫泡沫夹层型结构改善屈曲和减振特性。设计载荷以25m / s的风速确定，使用有限元分析方法进行结构分析以确认强度，屈曲和自然频率的安全性和稳定性。使用手动放置方法制造原型，并使用三点浓缩加载方法进行实验测试。为了评估设计结果，将其与实验结果进行比较。根据比较结果，估计结果如可压缩应力，最大尖端偏转，固有频率和屈曲负载因子与实验结果很好。

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