Study of micro-elongated thermoelastic medium loaded with a piezoelectric layer under the influence of gravity using the dual-phase-lag model

This paper aims to examine the influence of gravity on a thermoelastic micro-elongated layer when a piezoelectric layer is above it, utilizing the theory of Lord–Shulman (L–S) and also the model of dual-phase-lag (DPL). A partial differential equation was transformed into an ordinary differential equation using the normal mode analysis. Aluminum epoxy numerical computations are carried out, and the results are presented in graphical format. The L–S theory and the model of DPL are compared in the presence and absence of gravity and it is found that gravity has quite a massive influence on all the physical quantities.