The nonlinear response of initially imperfect composite plates with piezoelectric actuators is investigated. The nonlinearity is limited to the prebuckling regime, where higher order terms present in the strain energy expression can be neglected. The advantage of the electromechanical coupling is exploited in two ways. First, the in-plane piezoelectric stress stiffening effect is used to tailor a stress distribution that inherently increases the critical buckling loads of perfect composite plates by posing an optimization problem that efficiently handles eventual uncertainties involved in the application of mechanical loadings. Second, piezoelectric bending moments are applied in order to avoid or ameliorate the undesirable effects of initial imperfections. An actuation strategy, where the piezoelectric membrane forces and bending moments are decomposed via an appropriate selection of voltages applied to piezoelectric patches that are symmetrically bonded to the top and bottom surfaces of the plate, is proposed and shown to be effective.
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e-mail: arfaria@ita.br
e-mail: doguaman@ryerson.ca
e-mail: donadon@ita.br
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Prebuckling Enhancement of Imperfect Composite Plates Using Piezoelectric Actuators
Alfredo R. de Faria,
Alfredo R. de Faria
Associate Professor
Department of Mechanical Engineering,
e-mail: arfaria@ita.br
Instituto Tecnológico de Aeronáutica, CTA-ITA-IEM
, São José dos Campos, SP 12228-900, Brazil
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Donatus C. D. Oguamanam,
Donatus C. D. Oguamanam
Associate Professor
Mem. ASME
Department of Mechanical and Industrial Engineering,
e-mail: doguaman@ryerson.ca
Ryerson University
, Toronto, ON, M5B 2K3, Canada
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Maurício V. Donadon
Maurício V. Donadon
Assistant Professor
Department of Aeronautical Engineering,
e-mail: donadon@ita.br
Instituto Tecnológico de Aeronáutica, CTA-ITA-IEM
, São José dos Campos, SP 12228-900, Brazil
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Alfredo R. de Faria
Associate Professor
Department of Mechanical Engineering,
Instituto Tecnológico de Aeronáutica, CTA-ITA-IEM
, São José dos Campos, SP 12228-900, Brazile-mail: arfaria@ita.br
Donatus C. D. Oguamanam
Associate Professor
Mem. ASME
Department of Mechanical and Industrial Engineering,
Ryerson University
, Toronto, ON, M5B 2K3, Canadae-mail: doguaman@ryerson.ca
Maurício V. Donadon
Assistant Professor
Department of Aeronautical Engineering,
Instituto Tecnológico de Aeronáutica, CTA-ITA-IEM
, São José dos Campos, SP 12228-900, Brazile-mail: donadon@ita.br
J. Appl. Mech. May 2011, 78(3): 031007 (8 pages)
Published Online: February 7, 2011
Article history
Received:
November 11, 2009
Revised:
December 27, 2010
Posted:
January 4, 2011
Published:
February 7, 2011
Online:
February 7, 2011
Citation
de Faria, A. R., Oguamanam, D. C. D., and Donadon, M. V. (February 7, 2011). "Prebuckling Enhancement of Imperfect Composite Plates Using Piezoelectric Actuators." ASME. J. Appl. Mech. May 2011; 78(3): 031007. https://doi.org/10.1115/1.4003352
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