Thermal and mechanical stability of a circular porous plate with piezoelectric actuators

In this study, thermal and mechanical stability of solid circular plate which is made of saturated and unsaturated porous material with piezoelectric actuators is investigated. The edge of the plate is clamped, and the plate is assumed to be geometrically perfect. The effect of porosity on mechanical and thermal buckling loads is investigated in this study. The results show that the effect of porosity on thermal and mechanical stability is different and depends on some parameters. Effects of fluid thermal expansion and piezoelectric thermal expansion on critical thermal buckling load are investigated for a porous plate. The effects of porous, piezoelectric layers thicknesses, and applied electrical field on thermal and mechanical buckling load of the plate are investigated, too. Mechanical and thermal equilibria are derived based on classic plate theory. Thermal and mechanical critical loads are obtained for all the cases, and finally, there is a comparison between the result of this paper and previous literature.