Aeroelastic response and energy harvesting from a cantilevered piezoelectric laminated plate
A new nonlinear computational model and code for a piezoelectric–aeroelastic coupled system has been developed. A cantilevered piezoelectric laminated plate in yawed flow (β≤900) and inverted yawed flow (β>900) with a rotated vortex lattice aerodynamic model and new inextensible beam and plate th...
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Published in | Journal of fluids and structures Vol. 76; pp. 14 - 36 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.01.2018
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Online Access | Get full text |
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Summary: | A new nonlinear computational model and code for a piezoelectric–aeroelastic coupled system has been developed. A cantilevered piezoelectric laminated plate in yawed flow (β≤900) and inverted yawed flow (β>900) with a rotated vortex lattice aerodynamic model and new inextensible beam and plate theory is considered in this computational model. For the linear piezoelectric–aeroelastic model a critical flutter or a divergence phenomenon is found for yaw angles β≤900 or β>900 respectively. The divergence speed is independent of the piezoelectric force. Beyond the linear flutter speed, a limit cycle oscillation (LCO) was found for β≤900 and a large static deflection has been observed for β>900. The power extraction from the piezoelectric network depends on the LCO amplitude, the LCO mode shape and the resistive load, R, for β≤900. As flow velocity and resistive load increase, the power extraction increases. From a power efficiency analysis, the best power efficiency is found for a flag like plate when β=00. This is because this configuration provides the largest LCO amplitude and the best LCO mode shape with a larger bending curvature. |
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ISSN: | 0889-9746 1095-8622 |
DOI: | 10.1016/j.jfluidstructs.2017.09.007 |