641 モード解析による構造動力学の観点からのトンボの羽の基礎研究

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This paper presents a basic investigation of dragonfly's wings from a viewpoint of structural dynamics based on the experimental modal analysis. This research is the first step of the authors' researches on biomechanics in order to give beneficial suggestions for the artificial structural optimization especially regarding very light and spatial structures to be developed in the future. Firstly, some physical and kinematical features of wings are measured using a high-speed camera system and a microscope, etc. Then, the transmissibilities of vibration of seven dragonflies' wings are measured using a vibrator and a laser vibrometer. The fundamental three natural frequencies and their associated natural modes in air are made clear by the experimental modal analysis. The first natural frequencies of the wings are different from each other within the range of about 50 Hz up to 200 Hz. The variance does not correlate to the mass of wings.
一般社団法人日本機械学会の論文
2002-09-13