202 風車ブレードの非線形振動解析 : 弾性ブレードに生じる面外振動

概要

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The use of the wind turbine generator has rapidly spread as the one of the clean energy sources. Recently, as the size of the wind turbine generator becomes larger, its maintenance becomes more difficult. However, there are few studies on the vibration analysis and its suppression in the conventional researches. The wind turbine is a special type of rotating machinery which has a long heavy blade rotating in the vertical plane under the action of the gravitational force. The wind power acting on the turbine blade changes periodically because of the height-dependent characteristic of the wind power. Therefore, the wind turbine blade requires the original point of view in the dynamical analysis. This paper investigates the fundamental vibration characteristic of the elastic wind turbine blade. The nonlinear analysis of the super-harmonic resonance is performed, and its characteristics are explained. Furthermore, the interaction effect of gravitational force and wind force on the super-harmonic resonance is clarified.
一般社団法人日本機械学会の論文
2009-08-03