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Role of Electromechanical Coupling, Locomotion Type and Damping on the Effectiveness of Fish-Like Robot Energy Harvesters

Author

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  • Ryan Salazar

    (Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USA)

  • Ryan Quintana

    (Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USA)

  • Abdessattar Abdelkefi

    (Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USA)

Abstract

In this work, an investigation into the influence of prescribed motion on a body caudal fin aquatic unmanned vehicle (AUV) energy harvester is carried out. The undulatory–oscillation locomotion inspired by fishes actuates a composite beam representative of a spinal column with a piezoelectric patch. Two patch configurations—one at the head and tail—are considered for the AUV energy harvester, with a length that would not activate a harmonic in the system. An electromechanical model which accounts for the strain of the prescribed motion and the induced relative strain is developed. Discretizing the relative strain using Galerkin’s method requires a convergence study in which the impacts of the prescribed motion, dependent on the undulation and envelope of the motion, are investigated. The combination of prescribed motion and structural terms leads to a coupling that requires multiple investigations. The removal of the undulation of the system produces a more consistent response. The performances of the two different patch configurations undergoing different prescribed motions are studied in terms of coupled damping and frequency effects. An uncoupled Gauss law-based model is adopted to compare the performance of our approach and that of the coupled electromechanical model harvester. It is demonstrated that there is a complex interaction of the phases of the prescribed and relative motions of the structure which can lead to the development or destruction of the response of the total motion or voltage for the system. The results show that the structural damping and type of locomotion are the most influential parameters on the validity of the uncoupled approach. It is also found that the optimal resistances for the coupled and uncoupled representations are the same for the two motions and patch configurations considered.

Suggested Citation

  • Ryan Salazar & Ryan Quintana & Abdessattar Abdelkefi, 2021. "Role of Electromechanical Coupling, Locomotion Type and Damping on the Effectiveness of Fish-Like Robot Energy Harvesters," Energies, MDPI, vol. 14(3), pages 1-32, January.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:3:p:693-:d:489304
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    References listed on IDEAS

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    1. Salazar, R. & Abdelkefi, A., 2020. "Nonlinear analysis of a piezoelectric energy harvester in body undulatory caudal fin aquatic unmanned vehicles," Applied Energy, Elsevier, vol. 263(C).
    2. Salazar, R. & Serrano, M. & Abdelkefi, A., 2020. "Fatigue in piezoelectric ceramic vibrational energy harvesting: A review," Applied Energy, Elsevier, vol. 270(C).
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    Cited by:

    1. Paweł Piskur, 2022. "Side Fins Performance in Biomimetic Unmanned Underwater Vehicle," Energies, MDPI, vol. 15(16), pages 1-14, August.
    2. Paweł Piskur & Piotr Szymak & Michał Przybylski & Krzysztof Naus & Krzysztof Jaskólski & Mariusz Żokowski, 2021. "Innovative Energy-Saving Propulsion System for Low-Speed Biomimetic Underwater Vehicles," Energies, MDPI, vol. 14(24), pages 1-15, December.

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