TY - GEN
T1 - Electromechanical coupling and energy conversion in a PZT-coated Timoshenko beam based on acoustic black hole effect
AU - Cheng, L.
AU - Kerschen, G.
AU - Zhang, Linli
N1 - Funding Information:
Authors thank the Research Grant Council of the Hong Kong SAR and National Science Foundation of China (No. 11532006) for their support.
Publisher Copyright:
© 2020 Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
PY - 2020/9
Y1 - 2020/9
N2 - The phenomena of wave retarding and focusing caused by Acoustic black hole (ABH) effects opens new horizons for wave manipulation and energy harvesting (EH). This paper investigates the electromechanical coupling between the PZT patches and the host ABH beam and explores the resultant energy conversion efficiency for potential the EH applications. An improved fully coupling electromechanical semi-analytical model is first established based on Timoshenko deformation theory and validated against FEM and experimental results. Numerical analyses are then conducted to show typical ABH-specific features and the influence of PZT layout on the electromechanical coupling strength of the system and the corresponding the EH efficiency. It is shown that ABH effects allow effective EH upon a proper design of the PZT layout in relation to the wavelength. The electromechanical coupling coefficient is shown to be positively related to the EH efficiency of the system, which can be used to maximize the EH performance of the system.
AB - The phenomena of wave retarding and focusing caused by Acoustic black hole (ABH) effects opens new horizons for wave manipulation and energy harvesting (EH). This paper investigates the electromechanical coupling between the PZT patches and the host ABH beam and explores the resultant energy conversion efficiency for potential the EH applications. An improved fully coupling electromechanical semi-analytical model is first established based on Timoshenko deformation theory and validated against FEM and experimental results. Numerical analyses are then conducted to show typical ABH-specific features and the influence of PZT layout on the electromechanical coupling strength of the system and the corresponding the EH efficiency. It is shown that ABH effects allow effective EH upon a proper design of the PZT layout in relation to the wavelength. The electromechanical coupling coefficient is shown to be positively related to the EH efficiency of the system, which can be used to maximize the EH performance of the system.
UR - http://www.scopus.com/inward/record.url?scp=85105817736&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:85105817736
T3 - Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics
SP - 2775
EP - 2787
BT - Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics
A2 - Desmet, W.
A2 - Pluymers, B.
A2 - Moens, D.
A2 - Vandemaele, S.
PB - KU Leuven - Departement Werktuigkunde
T2 - 2020 International Conference on Noise and Vibration Engineering, ISMA 2020 and 2020 International Conference on Uncertainty in Structural Dynamics, USD 2020
Y2 - 7 September 2020 through 9 September 2020
ER -