F. Ashida et al., CONTROL OF ELASTIC DISPLACEMENT IN PIEZOELECTRIC-BASED INTELLIGENT PLATE SUBJECTED TO THERMAL LOAD, International journal of engineering science, 35(9), 1997, pp. 851-868
The present paper discusses an intelligent solid-state actuator which
can control a distribution of the elastic displacement at the submicro
n order, in the case where temperature changes in the surrounding medi
um induces elastic deformation in the actuator. The intelligent actuat
or consists of an isotropic structural plate to which a piezoelectric
ceramic plate is perfectly bonded. First, by analyzing an inverse prob
lem of piezothermoelasticity, the temperature change of the surroundin
g medium is inferred from the electric potential on the piezoelectric
ceramic plate. Next, analysis of a direct piezoelastic problem leads t
o an appropriate electric potential applied to the piezoelectric ceram
ic plate which suppresses the induced normal elastic displacement on t
he free surface of the isotropic plate. Finally, numerical results are
illustrated graphically. (C) 1997 Elsevier Science Ltd.