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26 March 2015 Dynamic response of a piezoelectric flapping wing
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Piezo-composite membranes have advantages over motorized flapping where frequencies are high and certain coupling between bending and twisting is useful to generate lift and forward flight. We draw examples of fruit fly and bumble bee. Wings with Piezo ceramic PZT coating are realized. The passive mechanical response of the wing is characterized experimentally and validated using finite element simulation. Piezoelectric actuation with uniform electrode coating is characterized and optimal frequencies for flapping are identified. The experimental data are used in an empirical model and advanced ratio for a flapping insect like condition for various angular orientations is estimated.
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Alok Kumar, Gaurang Khandwekar, S. Venkatesh, D. Roy Mahapatra, and S. Dutta "Dynamic response of a piezoelectric flapping wing", Proc. SPIE 9429, Bioinspiration, Biomimetics, and Bioreplication 2015, 94290O (26 March 2015);

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