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JRM Vol.33 No.2 pp. 216-222
doi: 10.20965/jrm.2021.p0216
(2021)

Paper:

Motion Analysis of Butterfly-Style Flapping Robot Using CFD Based on 3D-CAD Model and Experimental Flight Data

Keisuke Sanuki and Taro Fujikawa

Graduate School of Science and Technology for Future Life, Tokyo Denki University
5 Senju Asahi-cho, Adachi-ku, Tokyo 120-8551, Japan

Received:
November 6, 2020
Accepted:
February 25, 2021
Published:
April 20, 2021
Keywords:
flapping robot, butterfly, CFD, 3D-CAD, motion analysis
Abstract
Motion Analysis of Butterfly-Style Flapping Robot Using CFD Based on 3D-CAD Model and Experimental Flight Data

Pressure distribution around the wings

In this paper, a computational fluid dynamics (CFD) analysis system based on a 3D-CAD model of a butterfly-style flapping robot using its experimental flight data is proposed. The butterfly-style flapping robot can control its attitude by changing its flapping and lead-lag angles; however, measuring the lift, thrust, and body pitch moment directly during flight is difficult. In the case of the flight motion analysis of insects, the state of flight has been photographed, and numerical analysis has been performed to obtain the flow field around the wings. However, when performing the motion analysis of hardware, it is difficult to reflect the shape of the body accurately using this method. In this study, a CFD analysis system considered the shape of the developed butterfly-style flapping robot as 3D-CAD data and analyzed the flow field around the wings using the experimental flight data of the hardware. The results of motion analysis showed that the attitude during flight differs due to the difference in lifts and body pitch moments in the flight experiment data of the hardware with different neutral angles of the flapping wings.

Cite this article as:
Keisuke Sanuki and Taro Fujikawa, “Motion Analysis of Butterfly-Style Flapping Robot Using CFD Based on 3D-CAD Model and Experimental Flight Data,” J. Robot. Mechatron., Vol.33, No.2, pp. 216-222, 2021.
Data files:
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Last updated on Jul. 20, 2021