Aerodynamic flow induced tunable piezoelectric metamaterial for wave attenuation in Aircraft wing

This paper presents the piezoelectric metamaterial concept that actively attenuates the desired vibration waves in the UAV wing. Three primary objectives of this paper are to (1) propose the piezoelectric metamaterial wing without significant increase in the overall weight of wings, (2) develop the transfer matrix method for wave propagation analysis that includes aerodynamic effects, and (3) explore the new bandgap formations, due to interaction of piezoelectric metamaterials with aerodynamic flow, for flexural wave attenuation in UAV wing. The bandgap analysis shows that piezoelectric metamaterial wings interact with aerodynamic flow to create a new bandgap at a low-frequency range, termed as aeroelastic bandgap. Moreover, the Bragg and local (RL) bandgaps also get broadened. It is found that the attenuation performance of bandgaps increases with the increase in flow velocities. This study sh ows the interaction of piezoelectric metamaterial and aerodynamic flow to obtain tunable bandgaps for flexural wave attenuation in UAV wings without increasing its electric power or weight constraints.