Vibrations analysis of propagation of SH-type wave influenced by a point source in a porous piezoelectric layered structure by Green’s function approach.

The principal objective of this paper is to investigate the propagation behaviour of SH-type waves incurred due to a point source in a porous piezoelectric layer resting over a heterogeneous viscoelastic substrate. The Green’s function technique is used to determine the frequency equation which ultimately reduces to the classical Love wave equation as a special case of the present problem. Further, expressions for the particle displacement in the layer and substrate have been obtained. Some numerical computations and comparative analysis have been performed to demonstrate the behavioural characteristics of SH-type wave propagation under the influence of some of the critical factors such as heterogeneity parameter associated with rigidity, internal friction and, density. Other affecting factors include dissipation factor, attenuation coefficient, piezoelectric constant, the width of the PPM layer and dielectric constants, which have been unravelled and displayed graphically. [ABSTRACT FROM AUTHOR]