Modal and Harmonic Analysis of Bio-Mimic Corrugated Dragonfly Aerofoil
Md Akhtar Khan1, Chinmaya Padhy2

1Md Akhtar Khan*, Scholar in Department of Mechanical Engineering, GITAM deemed to be University, Hyderabad, India,
2Chinmaya Padhy, Department of Mechanical Engineering, GITAM deemed to be University, Hyderabad,India,

Manuscript received on March 28, 2020. | Revised Manuscript received on April 25, 2020. | Manuscript published on April 30, 2020. | PP: 1817-1821 | Volume-9 Issue-4, April 2020. | Retrieval Number: D8937049420/2020©BEIESP | DOI: 10.35940/ijeat.D8937.049420
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Abstract: In this present work, free vibration analysis is carried out on the 2-dimensional bio-mimetic corrugated ‘Pantala flavescens’ dragonfly forewing. The numerical modeling based on Finite Element Method (FEM) is developed to predict structural limitation of the dragonfly wings Dragonfly wings bend and twist over the course of flight stroke, causing deformation by a combination of elastic and inertial forces. We found that the wing deformation is smaller during the downstroke and it is revealed that the structural maximum beat frequency of a corrugated dragonfly wing is 38.34 Hz during hovering flight. The modal and harmonic analysis is performed using ANSYS 15 Mechanical APDL to extract the wing’s natural frequency and mode shape of corrugated wing which is significant in design, analysis and manufacturing of analogous MAVs structure.
Keywords: Free Vibration, structural stability, FEM, corrugated wing, ANSYS 15, modal and harmonic analysis, natural frequencies