Active control of laminated cylindrical shells using piezoelectric fiber reinforced composites

This paper deals with the analysis of vertically reinforced 1–3 piezoelectric composite materials as the material used for the distributed actuator of smart structures A micromechanics model has been derived to predict the effective elastic and piezoelectric coefficients of these piezoelectric composites which are useful for the analysis of smart beams In order to investigate the performance of a layer of this 1–3 piezoelectric composite material as the distributed actuator of smart structures, active constrained layer damping (ACLD) of smart laminated composite beams has been studied The constraining layer in the ACLD treatment has been considered to be made of this piezoelectric composite A finite element model has been developed to study the dynamics of the overall beam/ACLD system Both in-plane and out-of-plane actuations of the constraining layer of the ACLD treatment have been utilized for deriving the finite element model It has been found that these vertically reinforced 1–3 piezoelectric composite materials which are in general being used as distributed sensors can be potentially used as distributed actuators of smart structures

https://iopscience.iop.org/article/10.1088/0964-1726/15/2/047/pdf

The performance of vertically reinforced 1 3 piezoelectric composites in active damping of smart structures

This paper deals with the analysis of vertically reinforced 1-3 piezoelectric composite materials as the material for the distributed actuator of smart laminated composite plates. A simple micromechanics model has been derived to predict the effective elastic and piezoelectric coefficients of these piezoelectric composites which are useful for the three dimensional analysis of smart structures. The main concern of this study is to investigate the performance of a layer of this vertically reinforced 1-3 piezoelectric composite material as the constraining layer of the active constrained layer damping (ACLD) treatment. A finite element model has been developed for analyzing the active constrained layer damping of laminated symmetric and antisymmetric cross-ply and angle-ply composite plates integrated with the patches of such ACLD treatment. Both in-plane and out-of-plane actuation of the constraining layer of the ACLD treatment have been utilized for deriving the finite element model. The analysis revealed...

On the Use of Vertically Reinforced 1-3 Piezoelectric Composites for Hybrid Damping of Laminated Composite Plates

Static and dynamic analysis of smart cylindrical shell

This article is concerned with the investigation of active constrained layer damping (ACLD) of smart laminated fuzzy fiber reinforced composite (FFRC) plates. The distinctive feature of the constru...

Smart damping of fuzzy fiber reinforced composite plates using 1--3 piezoelectric composites:

An isoparametric, degenerate element for constrained layer damping treatments is presented The element is valid for either plate or shell structures The element is an 18-node degenerate element with nine nodes located on the base shell (or plate) structure and nine nodes on the constraining layer Each node has five degrees of freedom: translations in x,y, and z and bending rotations α and β about the midsurface where the node is located The displacement field of the viscoelastic layer is interpolated linearly from the nodal displacements; therefore, the viscoelastic layer allows both shear and normal deformations The base shell (or plate) structure and the constraining layer can be linearly elastic or piezoelectric for passive or active applications The viscoelastic layer is assumed to be linearly viscoelastic The equation of motion is derived through use of the principle of virtual work For thin plate structures, numerical results show that the isoparametric element can predict natural frequencies, loss factors, and mechanical impedances that are as accurate as NASTRAN with substantially fewer elements For thin shell structures, locking and spurious modes need to be resolved to yield reasonable results

I. Y. Shen

Papers

Development of Isoparametric, Degenerate Constrained Layer Element for Plate and Shell Structures