Effect of Heterogeneity on Edge Wave Propagation in an Initially Stressed Dry Sandy Plate.

The present paper deals with the propagation characteristics of plane waves at the edge of an initially stressed heterogeneous dry sandy plate in which heterogeneity has been considered as exponential function of depth for both regidity and density. Characteristic equations of plane waves are derived with the aid of potential function. The dispersion relation has been obtained in a simplified form with the help of suitable boundary conditions. Numerical computation has been carried out to show the influence of wave number, sandiness parameter, heterogeneity parameter and initial stresses and depicted by means of graphs. [ABSTRACT FROM AUTHOR]