Electrothermoelastic Behavior of Piezoelectric Coupled Cylinders

摘要

A coupled axisymmetric electrothermomechanical solution is presented for modeling the response of layered concentric cylinders exhibiting piezoelectric behavior. The governing equations for the problem are derived using conventional approaches incorporating electromechanical coupling terms and a unique higher order constitutive model that correctly reflects the strong dependence of the piezoelectric strain coefficients on temperature. This analytical approach suggests that stiffness values measured at constant electric displacement conditions are de- pendent on temperature due to depolarizing field influences.