Abstract
This paper deals with the analysis of active constrained layer damping (ACLD) of smart skew laminated composite plates. The constraining layer of the ACLD treatment is composed of the vertically/obliquely reinforced 1–3 piezoelectric composites (PZCs). A finite element model has been developed for accomplishing the task of the active constrained layer damping of skew laminated symmetric and antisymmetric cross-ply and antisymmetric angle-ply composite plates integrated with the patches of such ACLD treatment. Both in-plane and out-of-plane actuations by the constraining layer of the ACLD treatment have been utilized for deriving the finite element model. The analysis revealed that the vertical actuation dominates over the in-plane actuation. Particular emphasis has been placed on investigating the performance of the patches when the orientation angle of the piezoelectric fibers of the constraining layer is varied in the two mutually orthogonal vertical planes. Also, the effects of varying the skew angle of the substrate laminated composite plates and different boundary conditions on the performance of the patches have been studied. The analysis reveals that the vertically and the obliquely reinforced 1–3 PZC materials should be used for achieving the best control authority of ACLD treatment, as the boundary conditions of the smart skew laminated composite plates are simply supported and clamped-clamped, respectively.
Highlights
Extensive research on the use of piezoelectric materials for making distributed actuators and sensors of light weight flexible smart structures has been carried out during the past several years [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]
Damping of smart skew laminated composite plates when vertically/obliquely reinforced 1–3 piezoelectric composites (PZCs) materials are used as the materials for the constraining layer of the active constrained layer damping (ACLD) treatment
A layerwise FSDT-based finite element model has been developed to describe the dynamics of the skew laminated composite plates integrated with the patches of ACLD treatment
Summary
Extensive research on the use of piezoelectric materials for making distributed actuators and sensors of light weight flexible smart structures has been carried out during the past several years [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]. The further research on the efficient use of these low-control authority monolithic piezoelectric materials led to the development of the active constrained layer damping (ACLD) treatment [17]. The constraining layer of the activated ACLD treatment increases the transverse shear deformations of the viscoelastic constrained layer over its passive counterpart resulting in improved damping of the host structures. In case of the obliquely reinforced 1–3 PZC, the piezoelectric fibers are obliquely aligned in the vertical plane across the thickness of the lamina These PZCs are characterized by improved mechanical performance, electromechanical coupling characteristics, and acoustic impedance matching over the existing monolithic piezoelectric materials [26]. Authors intend to investigate the active constrained layer damping (ACLD) of skew laminated composite plates. Particular emphasis has been placed on investigating the effect of variation of piezoelectric fiber orientation angle on the performance of the ACLD patches for controlling the vibrations of the skew laminated composite plates
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