Article (Scientific journals)
Nonlinear features and energy transfer in an Acoustic Black Hole beam through intentional electromechanical coupling
Zhang, L.; Kerschen, Gaëtan; Cheng, L.
2022In Mechanical Systems and Signal Processing, 177
Peer Reviewed verified by ORBi
 

Files


Full Text
MSSP-pre-final-Revised by Linli.pdf
Author postprint (1.73 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Acoustic Black Hole; Electromechanical coupling; Energy transfer; Intentional nonlinearity; Vibration control; Gravitation; Stars; Thin walled structures; Acoustic black holes; Electrical nonlinearity; Energy; Energy-transfer; Feature transfers; Frequency ranges; Nonlinear features; Power law variation; Thin-walled structures
Abstract :
[en] Acoustic Black Hole (ABH) phenomenon features unique wave retarding and energy focusing of flexural waves inside thin-walled structures whose thickness follows a power-law variation. Existing studies, mostly focusing on linear aspects, show the deficiency of the linear ABH structures in coping with low-frequency problems, typically below the so-called cut-on frequency. In this paper, electrical nonlinearities are intentionally imposed via PZT patches over an ABH beam to tactically influence its dynamics through electromechanical coupling. Using a fully coupled electromechanical beam model, typical electromechanical coupling phenomena between the beam and the external nonlinear circuits, as well as the resultant salient nonlinear features of the system, are numerically investigated. Results show the beneficial effects arising from the intentional electrical nonlinearity in terms of generating energy transfer from low to high frequencies inside the beam, before being dissipated by the ABH covered by a small amount of damping materials. As such, the effective frequency range of the ABH is broadened, conducive to low-frequency vibration control problems. Meanwhile, different from existing mechanical means, the introduced intentional electrical nonlinearity allows for flexible tuning to accommodate specific frequency ranges arising from different applications. © 2022 Elsevier Ltd
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Zhang, L.;  Department of Mechanical Engineering, The Hong Kong Polytechnic University Hung Hom, Hong Kong SAR, Kowloon, China
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Cheng, L.;  Department of Mechanical Engineering, The Hong Kong Polytechnic University Hung Hom, Hong Kong SAR, Kowloon, China
Language :
English
Title :
Nonlinear features and energy transfer in an Acoustic Black Hole beam through intentional electromechanical coupling
Publication date :
2022
Journal title :
Mechanical Systems and Signal Processing
ISSN :
0888-3270
eISSN :
1096-1216
Publisher :
Academic Press
Volume :
177
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
Authors thank the Research Grant Council of the Hong Kong SAR (PolyU 152023/20E) for financial support.
Available on ORBi :
since 30 October 2022

Statistics


Number of views
26 (0 by ULiège)
Number of downloads
83 (0 by ULiège)

Scopus citations®
 
16
Scopus citations®
without self-citations
13
OpenCitations
 
0

Bibliography


Similar publications



Contact ORBi