Internal resonance in galloping, VIV, and flutter for concurrent wind and base vibration energy harvesting

Che Xu; Liya Zhao

doi:10.1117/12.2611733

20 April 2022 Internal resonance in galloping, VIV, and flutter for concurrent wind and base vibration energy harvesting

Che Xu, Liya Zhao

Author Affiliations +

Proceedings Volume 12043, Active and Passive Smart Structures and Integrated Systems XVI; 120430P (2022) https://doi.org/10.1117/12.2611733
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

In recent years, there have been increasing interests in energy harvesting from concurrent wind flow and base vibration, based on a recent realization that the two types of excitations are inseparable in many practical circumstances like bridges, ships, aircrafts, offshore infrastructures, etc. There are several ways to achieve wind-induced oscillations, i.e., aero-elasticities, such as galloping, vortex-induced-vibration (VIV), flutter, etc. However, the basic principles for these aero-elasticities are different. Since the principles of these aeroelastic instabilities are different, the performance and dynamic characteristics of different types of aeroelastic energy harvesters will also be different when subjected to combined wind and base vibration loadings. This work presents a comprehensive comparison study to evaluate and compare the performance of different types of aeroelastic energy harvesters with 2:1 internal resonance in concurrent wind and base vibration energy harvesting. We consider three types of 2DOF energy harvesters based on galloping, VIV and flutter aeroelasticity. All three harvesters are subjected to concurrent wind flow and base vibration. It is shown that the two-to-one internal resonance is effective for all three types of harvesters under concurrent loadings, capable to simultaneously widen the synchronization bandwidth and enhance the voltage level. In particular, with the galloping energy harvester, a 153% increase in voltage level and 6.8 times increase in the bandwidth width are achieved around the 1st resonance region.

Conference Presentation

Citation Download Citation

Che Xu and Liya Zhao "Internal resonance in galloping, VIV, and flutter for concurrent wind and base vibration energy harvesting", Proc. SPIE 12043, Active and Passive Smart Structures and Integrated Systems XVI, 120430P (20 April 2022); https://doi.org/10.1117/12.2611733

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