[en] This work presents a novel vibration damping approach for bladed structures. Piezoelectric transducers bonded to a structure can be used simultaneously as actuators and sensors in order to mitigate the vibrations of their host. This can be achieved by connecting a transducer to a digital vibration absorber composed of a voltage sensor, a digital processing unit and a current injector. The digital vibration absorber thereby emulates a piezoelectric shunt. In this study, this technique is applied to bladed structures featuring small modal damping and closely-spaced resonance frequencies grouped in mode families. A strategy exploiting the high modal density is presented. Effective vibration mitigation is experimentally demonstrated on multiple mode families simultaneously.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Dietrich, Jennifer ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Raze, Ghislain ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Paknejad, Ahmad; ULiège - University of Liège [BE] > Department of Aerospace and Mechanical Engineering > Active Aerospace Structures and Advanced Mechanical Systems
Deraemaeker, Arnaud; ULB - Université Libre de Bruxelles [BE] > Building Architecture and Town Planning
Collette, Christophe ; Université de Liège - ULiège > Aérospatiale et Mécanique (A&M)
Kerschen, Gaëtan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Vibration mitigation of bladed structures using piezoelectric digital vibration absorbers
Publication date :
03 August 2022
Event name :
IMAC XL 2022
Event place :
Orlando, United States
Event date :
2022
Audience :
International
Main work title :
Special Topics in Structural Dynamics & Experimental Techniques, Volume 5
Author, co-author :
Davis, Benjamin
Editor :
Allen, Matt
Davaria, Sheyda
Publisher :
Springer, Cham, Switzerland
ISBN/EAN :
978-3-031-05405-1
Collection name :
Conference Proceedings of the Society for Experimental Mechanics Series
The authors J. Dietrich, G. Raze, A. Paknejad, C. Collette and G. Kerschen would like to acknowledge the financial support of the SPW (WALInnov Grant 1610122).
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