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Simulation of Piezoelectric Smart Lightweight Structures by the Finite Element Method for Acoustic Control
Author(s) -
Lefèvre Jean,
Gabbert Ulrich
Publication year - 2004
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200410151
Subject(s) - finite element method , piezoelectricity , actuator , acoustics , reduction (mathematics) , controller (irrigation) , smart material , range (aeronautics) , piezoelectric sensor , vibration , computer science , simple (philosophy) , vibration control , engineering , structural engineering , materials science , physics , aerospace engineering , mathematics , nanotechnology , agronomy , philosophy , geometry , epistemology , biology , artificial intelligence
Piezoelectric patches are widely used as distributed actuators and sensors for active vibration control. Active control of sound in this way is mainly interesting in the low frequency range, where passive methods are less effective. To simulate such electromechanical‐acoustical systems a virtual overall model based on the FEM is presented in the paper. Different approaches for model reduction with respect to controller design purposes are discussed. As a simple test example the numerical model of an acoustic box is studied. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)