圧電材料の熱弾性解析とスマート機能の発現

概要

論文の詳細を見る
This paper deals with investigations on sensing and controlling the transient thermoelastic response in a composite circular disk consisting of transversely isotropic structural and piezoceramic layers. Constitutive and governing equations for the elastic and electric fields in piezoelectric solids of crystal class 6mm as well as a potential function approach for determining the transient piezothermoelastic response are outlined. Applications of the potential function approach to a direct problem (prescribed thermal loading), a control problem (determination of an applied electric potential needed to control the thermoelastic deformation) and an inverse problem (determination of a thermal loading from knowledge of the induced electric potential) are addressed. Finally, a problem of a smart composite disk with two piezoceramic layers is discussed. Here, one piezoceramic layer serves as a sensor and the other piezoceramic layer serves as an actuator. The transient thermoelastic deformation resulting from an unknown thermal loading is controlled.
2004-03-17