Shear waves in a piezoceramic layered structure

The propagation of SH-type wave is studied in a composite structure consisting of alternating polymeric layers and porous piezoelectric layers. The porous piezoelectric materials of the composite structure are assumed to have 6mm symmetry and their poling direction is along z -axis. Layers of the po...

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Bibliographic Details
Published in:Acta mechanica 2013-04, Vol.224 (4), p.727-744
Main Authors: Vashishth, Anil K., Dahiya, Ashok
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Composite materials
Composite structures
Control
Dynamical Systems
Engineering
Engineering Thermodynamics
Heat and Mass Transfer
Layering
Materials science
Mathematical analysis
Phase velocity
Piezoelectricity
Polyethylenes
Polymers
Porous materials
Propagation
Propagation (polymerization)
Solid Mechanics
Theoretical and Applied Mechanics
Vibration
Wave propagation
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Summary:The propagation of SH-type wave is studied in a composite structure consisting of alternating polymeric layers and porous piezoelectric layers. The porous piezoelectric materials of the composite structure are assumed to have 6mm symmetry and their poling direction is along z -axis. Layers of the polymer are considered as isotropic dielectric elastic material. Solutions of the field equations for the porous piezoelectric material and for the polymeric material are obtained. Two cases, first when the direction of propagation of the SH-type wave is taken along the direction normal to the layering of the composite structure, and second when the propagation direction is taken along the layering, are considered for the derivation of the phase velocity. The dispersion and the stop-pass band behavior of the Floquet wave is also discussed. Numerical results for phase velocity and stop band effect are presented for a periodic system of alternating PZT-5H and polythene layers. The influence of volume fraction on phase velocity and stop band effect is discussed.
ISSN:0001-5970
1619-6937
DOI:10.1007/s00707-012-0772-3