Liouville-Green approximation: An analytical approach to study the elastic waves vibrations in composite structure of piezo material

The present study investigates the propagation of Love-type wave in functionally graded piezoelectric material (FGPM) layer bonded between piezomagnetic (PM) plate and pre-stressed piezoelectric (PE) half-space. Spatial varying WKB (Wentzel-Kramers-Brillouin) method is used to obtain an analytical solution for FGPM layer. In FGPM layer we consider material gradients vary exponentially in the direction of layers width from which we drove frequency relations after facing specific boundary conditions and matched with existing result. Some representative examples are considered to investigate the significant characteristics of the Love-type wave under the influence of some affecting parameters (like initial stress, PM-coefficient, plate width and material gradients) and represents graphically. Cut-off frequencies curves for first three modes and effect of material parameters on electromechanical coupling factor have also depicted graphically. In the study, we find that piezoelectric (PE) and dielectric (DE) coefficients have more influence on phase velocity of Love type wave in comparison to other elastic parameters which should be an essential factor to control the specific characteristics of the multiferroic waveguides of Piezo-materials.

Approximation of surface wave frequency in piezo-composite structure

This research article manifests the influence of mechanically and dielectrically conducting interface on the characteristics of surface wave transmission in a piezo-structure with flexoelectric effect at the nanoscale level. The considered model consists a piezoelectric (Lithium Niobate (LiNbO3)) layer resting on piezoelectric (lead zirconate titanate (PZT-5H)) half-space. The imperfect interface includes mechanically compliment and dielectrically weakly conducting interface, mechanically compliment and dielectrically highly conducting interface, mechanically debond interface and dielectrically insulating interface. Complex dispersion relations are obtained analytically in determinant form corresponding to electrically open and short circuit cases. A numerical example has been provided to highlight the influences of different affecting parameters (like layer thickness, flexoelectric parameter, degree of dielectric and mechanically imperfect interface) on the phase velocity curve. Salient outcomes of the present study have been shown graphically.

Analysis of different boundary types on wave velocity in bedded piezo-structure with flexoelectric effect

This work focuses on the study of plane wave reflection at the surface of a piezothermoelastic fiber-reinforced composite (PTFRC) half-space. The classical dynamical coupled theory, Lord-Shulman th...

Reflection of plane waves from the surface of a piezothermoelastic fiber-reinforced composite half-space

Effects of initial stresses on reflection phenomenon of plane waves at the free surface of a rotating piezothermoelastic fiber-reinforced composite half-space

This article investigates the propagation behaviour of horizontally polarized shear waves in a layered composite structure. In the considered model, a functionally graded piezoelectric material lay...

Polarized shear waves in functionally graded piezoelectric material layer sandwiched between corrugated piezomagnetic layer and elastic substrate

Influence of imperfect bonding on the reflection and transmission of QP-wave at the interface of two functionally graded piezoelectric materials

Modelling of love-type wave propagation in piezomagnetic layer over a lossy viscoelastic substrate: Sturm–Liouville problem

Present article aims to study the propagation of horizontally polarized shear waves (SH waves) in Functionally Graded Piezoelectric Material (FGPM) layer. The considered FGPM layer is lying over a ...

Propagation of SH waves in corrugated FGPM layer lying over a piezomagnetic half-space

In the present article, a theoretical investigation has been carried out to analyze the propagation of shear horizontal surface waves (SH-waves) in a structure consisting of a functionally graded p...

Sonali Mondal

Papers

Polarized shear waves in functionally graded piezoelectric material layer sandwiched between corrugated piezomagnetic layer and elastic substrate

Influence of imperfect bonding on the reflection and transmission of QP-wave at the interface of two functionally graded piezoelectric materials

Modelling of love-type wave propagation in piezomagnetic layer over a lossy viscoelastic substrate: Sturm–Liouville problem

Propagation of SH waves in corrugated FGPM layer lying over a piezomagnetic half-space

Mathematical analysis of surface wave transference through imperfect interface in FGPM bedded structure