AXISYMMETRICAL VIBRATION OF PIEZOCOMPOSITE HOLLOW CIRCULAR-CYLINDER

The axisymmetric vibration of a piezoelectric laminated hollow circula r cylinder has been studied for an imperfect interface model. The freq uency equation is derived for traction free inner and outer surfaces o f the hollow cylinder with continuity conditions at the bonding interf aces. The composite cylinder is composed of two different piezoelectri c materials belonging to 6 mm class and a hypothetical Linear Elastic Material with Voids (LEMV) as bonding layer. Numerical solutions of th e frequency equation are obtained for the composite cylinder ceramic(1 )/LEMV/ceramic(2). Computational results are presented as dispersion c urves as well as in tables to characterize the attenuation of axial wa ves for three layered cylinders with and without voids in the thin LEM V layer.