Shape control and damage identification of beams using piezoelectric actuation and genetic optimization
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Date
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Hadjigeorgiou, E. P.
Stavroulakis, G. E.
Massalas, C. V.
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Elsevier
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peer reviewed
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International Journal of Engineering Science
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This paper deals with the shape control of beams under general loading conditions, using piezoelectric patch actuators that are surface bonded onto beams to provide the control forces. The mathematical formulation of the model is based on the shear deformation beam theory (Timoshenko theory) and the linear theory of piezoelectricity. The numerical solution of the model is based on the development of superconvergent (locking-free) finite elements using the form of the exact solution of the Timoshenko, beam theory and Hamilton's principle. The optimal values for the locations of the piezo-actuators are determined and optimal voltages for shape control are obtained for cantilever beams by using a genetic optimization procedure. Finally, a simplified related damage identification problem is formulated and solved using static data and genetic optimization. (c) 2006 Elsevier Ltd. All rights reserved.
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Keywords
adaptronic structures, laminated piezoelectric beams, finite element modelling, shape control, damage identification, active vibration control, laminated beams, finite-element
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<Go to ISI>://000239873300002
http://ac.els-cdn.com/S0020722506000516/1-s2.0-S0020722506000516-main.pdf?_tid=cbb95188d5d332dc8b58ae6ef260cc7c&acdnat=1339752095_4927b1c94f4f98edc7b5ddee0e0bf26a
http://ac.els-cdn.com/S0020722506000516/1-s2.0-S0020722506000516-main.pdf?_tid=cbb95188d5d332dc8b58ae6ef260cc7c&acdnat=1339752095_4927b1c94f4f98edc7b5ddee0e0bf26a
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en
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Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών