Dynamic Behavior of Dragonfly Wings

DOI Web Site 参考文献12件
  • SUDO Seiichi
    Department of Machine Intelligence and System Engineering, Akita Prefectural University
  • TAKAGI Kazuto
    Department of Machine Intelligence and System Engineering, Akita Prefectural University
  • TSUYUKI Koji
    Department of Mechanical Systems and Design Engineering, Iwaki Meisei University
  • YANO Tetsuya
    Department of Machine Intelligence and System Engineering, Akita Prefectural University

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This paper describes the frequency characteristics of dragonfly wings related to the aerodynamic characteristics. In the first stage, the higher speed flight of a dragonfly was analyzed with a high-speed video camera system. It was confirmed that insect wings undergo strong deformation during free flight. In the second stage, the surface roughness of dragonfly wing was measured by the three-dimensional, optical shape measuring system. It was clear that the difference of elevation is especially remarkable between the longitudinal veins at the part of leading edge. In the third stage, the dynamic responses of dragonfly wing to the excitation vibration were examined over the relatively wide range of frequency. The maximum amplitudes of insect wing oscillation were measured with the optical displacement detector system. It was found that the natural frequencies of dragonfly wings were related to the flapping frequency of the dragonfly. The deformable characteristics of dragonfly wings were related to the aerodynamic characteristics and structural strength of the dragonfly wing. Flexibility on the trailing edge of dragonfly wings was revealed experimentally.

収録刊行物

  • 実験力学

    実験力学 8 (Special_Issue), s163-s168, 2008

    日本実験力学会

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