Dynamic Analysis to Structures with Piezoelectric Actuators Based on Thermoelasticity Analogy
Dong Xing jian,Meng Guang
(State Key Lab. of Vibration, Shock & Noise, Shanghai Jiao Tong Univ. Shanghai 200030)

Abstract: Based on the analogy between converse piezoelectric effect and thermoe lastic effect, an applied electric field is input as a thermal load and piezoele ctric strain coefficients characterizing an actuator are modeled as thermal expansion coefficients, thus thermoelastic finite element method can be employed to analyze converse piezoelectric effect. A feasible methodology to predict the static and dynamic behaviors of complex structures with piezoelectric actuators is proposed. The numerical examples confirm the validity.
Keywords: piezoelectric-thermal analogy, piezoelectric, finite element, dynamics.