On the theory of generalized thermoelasticity for piezoelectric materials

The governing equations for generalized thermo-piezoelectric solid are formulated by using Green-Lindsay and Lord-Shulman theories. These equations are solved for two-dimensional model. It is found that there exists three plane waves in a two-dimensional model of thermo-piezoelectric solid. The velocities of these plane waves are found to depend upon properties of material and the angle of propagation.