CONTROL OF TRANSIENT THERMOELASTIC DISPLACEMENT OF AN ISOTROPIC PLATEASSOCIATED WITH A PIEZOELECTRIC CERAMIC PLATE

A solid-state actuator that is able to control a transient thermoelast ic displacement induced by temperature change of the surrounding mediu m is proposed The actuator is constructed of an isotropic structural p late to which a piezoelectric ceramic plate of crystal class 6 mm is p erfectly bonded. This three-dimensional problem of thermoelasticity in the combined plate is analyzed by means of the potential function met hods. Consequently, an appropriate electric potential applied to the p iezoelectric ceramic plate is obtained that gives the prescribed norma l elastic displacement on the free surface of the isotropic structural plate. Finally, numerical results are illustrated graphically.