M Malmorad - Department of Mechanical Engineering Harsin Branch, Islamic Azad University, Kermanshah Branch, Harsin, I.R. Iran
M.M Najafizadeh - Department of Mechanical Engineering Arak Branch, Islamic Azad University, Arak, I.R. Iran

In this research, thermal buckling analysis of rectangular functionally graded plates with Actuator/Actuator piezoelectric layers (FGPs) is studied based on neutral plane, classical and first order shear deformation plate theories. Mechanical properties of the plate are considered as those of Reddy Model. Plate is assumed to be under thermal loading. Nonlinear temperature rises through the thickness and boundary conditions are considered simply supported. Equilibrium and stability equations have been derived using calculus of variations and application of Euler equations. Finally, critical buckling temperature changes are studied based on the mentioned theories for a sample plate. An appropriate agreement is seen among the present results and the results of other researches.

Thermal buckling; Piezoelectric layers; Rectangular plate; FGM