Article (Scientific journals)
H∞ optimization of multiple tuned mass dampers for multimodal vibration control
Raze, Ghislain; Kerschen, Gaëtan
2021In Computers and Structures, 248, p. 106485
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Keywords :
multiple tuned mass damper; multimodal vibration absorber; equal-peak method; all-equal-peak design; Sherman-Morrison-Woodbury formula
Abstract :
[en] In this paper, a new computational method for the purpose of multimodal vibration mitigation using multiple tuned mass dampers is proposed. Classically, the minimization of the maximum amplitude is carried out using direct H∞ optimization. However, as shall be shown in the paper, this approach is prone to being trapped in local minima, in view of the nonsmooth character of the problem at hand. This is why this paper presents an original alternative to this approach through norm-homotopy optimization. This approach, combined with an efficient technique to compute the structural response, is shown to outperform direct H∞ optimization in terms of speed and performance. Essentially, the outcome of the algorithm leads to the concept of all-equal-peak design for which all the controlled peaks are equal in amplitude. This unique design is new with respect to the existing body of knowledge.
Disciplines :
Civil engineering
Aerospace & aeronautics engineering
Mechanical engineering
Author, co-author :
Raze, Ghislain  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
H∞ optimization of multiple tuned mass dampers for multimodal vibration control
Publication date :
May 2021
Journal title :
Computers and Structures
ISSN :
0045-7949
Publisher :
Elsevier, United Kingdom
Volume :
248
Pages :
106485
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 January 2021

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