Postbuckling of cross-ply laminated cylindrical shells with piezoelectric actuators under complex loading conditions

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Detail(s)

Original languageEnglish
Pages (from-to)1731-1754
Journal / PublicationInternational Journal of Mechanical Sciences
Volume44
Issue number8
Publication statusPublished - Aug 2002

Abstract

A postbuckling analysis is presented for a cross-ply laminated cylindrical shell with piezoelectric actuators subjected to the combined action of mechanical, electric and thermal loads. The temperature field considered is assumed to be a uniform distribution over the shell surface and through the shell thickness and the electric field is assumed to be the transverse component Ez only. The material properties are assumed to be independent of the temperature and the electric field. The governing equations are based on the classical shell theory with a von Kármán-Donnell-type of kinematic nonlinearity. The nonlinear prebuckling deformations and initial geometric imperfections of the shell are both taken into account. A boundary layer theory of shell buckling, which includes the effects of nonlinear prebuckling deformations, large deflections in the postbuckling range, and initial geometric imperfections of the shell, is extended to the case of hybrid laminated cylindrical shells. A singular perturbation technique is employed to determine the buckling loads and postbuckling equilibrium paths. The numerical illustrations concern the postbuckling behavior of perfect and imperfect, cross-ply laminated cylindrical thin shells with fully covered or embedded piezoelectric actuators subjected to combined mechanical loading of external pressure and axial compression, and under different sets of thermal and electric loading conditions. The effects played by temperature rise, applied voltage, shell geometric parameter, stacking sequence, as well as initial geometric imperfections are studied. © 2002 Elsevier Science Ltd. All rights reserved.

Research Area(s)

  • Boundary layer theory of shell buckling, Hybrid laminated cylindrical shell, Postbuckling, Singular perturbation technique, Thermo-piezoelectric effect