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Local active control for an exterior fluid‐structure interaction problem
Author(s) -
Domínguez Catalina,
Hernández Erwin,
Prato Torres Ricardo
Publication year - 2017
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.5495
Subject(s) - control theory (sociology) , fluid–structure interaction , control (management) , harmonic , optimal control , computer science , mathematics , physics , engineering , mathematical optimization , finite element method , structural engineering , acoustics , artificial intelligence
Summary In this paper, we propose a numerical method based on an active structural control to dampen the discrete critical frequencies from a fe/be coupled system, which models a time‐harmonic fluid‐structure interaction problem. The active structural acoustic control used consists of applying external forces directly on the structure, so that in the presence of critical frequencies, the linear system remains stable and, in turn, in the presence of non‐critical frequencies, the active control does not alter the system. We consider the problem in the framework of the theory of optimal control and present bi‐dimensional numerical simulations to show the behavior of the scheme in some vibro‐acoustic structures. Copyright © 2016 John Wiley & Sons, Ltd.