Active damping of geometrically nonlinear vibrations of smart composite plates using elliptical SCLD treatment with fractional derivative viscoelastic layer

In this article, the performance of elliptical smart constrained layer damping treatments on active damping of geometrically nonlinear vibrations of doubly curved smart laminated composite shells is analyzed. The constraining layers of the smart constrained layer damping treatments comprised vertically/obliquely reinforced 1–3 piezoelectric composites, while the constrained layers of isotropic viscoelastic materials are modeled using the three-dimensional fractional order derivative model. A mesh-free model of the smart composite shells is developed for analyzing their nonlinear transient responses within the framework of a layerwise shear and normal deformation theory considering the von Kármán–type geometric nonlinearity. Thin, doubly curved laminated composite shells integrated with elliptical/rectangular smart constrained layer damping patches with different stacking sequences and boundary conditions are considered for presenting the numerical results. The numerical analyses demonstrate the higher effectiveness of the elliptical smart constrained layer damping treatments over the rectangular ones in attenuating the nonlinear vibrations of laminated composite shells.

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Active damping of geometrically nonlinear vibrations of doubly curved laminated composite shells

Composite Structures ◽

10.1016/j.compstruct.2011.06.005 ◽

2011 ◽

Vol 93 (12) ◽

pp. 3216-3228 ◽

Cited By ~ 22

Author(s):

Saroj Kumar Sarangi ◽

M.C. Ray

Keyword(s):

Nonlinear Vibrations ◽

Laminated Composite ◽

Active Damping ◽

Geometrically Nonlinear ◽

Composite Shells ◽

Geometrically Nonlinear Vibrations ◽

Doubly Curved ◽

Laminated Composite Shells

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Active Damping of Nonlinear Vibrations of Functionally Graded Laminated Composite Plates using Vertically/Obliquely Reinforced 1-3 Piezoelectric Composite

Journal of Vibration and Acoustics ◽

10.1115/1.4004604 ◽

2012 ◽

Vol 134 (2) ◽

Cited By ~ 4

Author(s):

Satyajit Panda ◽

M. C. Ray

Keyword(s):

Nonlinear Vibrations ◽

Composite Layer ◽

Laminated Composite ◽

Composite Plates ◽

Functionally Graded ◽

Fe Model ◽

Geometrically Nonlinear ◽

Thickness Direction ◽

Laminated Composite Plates ◽

Geometrically Nonlinear Vibrations

This paper deals with a study on the active constrained layer damping (ACLD) of geometrically nonlinear vibrations of functionally graded (FG) laminated composite plates. The constraining layer of the ACLD treatment is considered to be made of the vertically/obliquely reinforced 1-3 piezoelectric composites (PZCs). The substrate FG laminated composite plate is composed of generally orthotropic FG layers. The generally orthotropic FG layer is a fiber reinforced composite layer in which the fibers are longitudinally aligned in the plane parallel to the top and bottom surfaces of the layer and their orientation angle is assumed to vary in the thickness direction according to a simple power-law in order to make it as a graded layer only in the thickness direction. The constrained viscoelastic layer of the ACLD treatment is modeled by implementing the Golla-Hughes-McTavish (GHM) method. Based on the first order shear deformation theory, the finite element (FE) model is developed to model the open-loop and closed-loop nonlinear dynamics of the overall FG laminated composite plates integrated with a patch of such ACLD treatment. The analysis suggests the potential use of the ACLD treatment with its constraining layer made of the vertically/obliquely reinforced 1-3 PZC material for active control of geometrically nonlinear vibrations of FG laminated composite plates. The effect of piezoelectric fiber orientation in the active 1-3 PZC constraining layer on the damping characteristics of the overall FG laminated composite plates is also investigated.

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