Equivalent Circuit Model of Magnetostrictive/Piezoelectric Laminated Composite

An equivalent circuital model of magnetostrictive/piezoelectric laminated composite has been developed in order to predict its behavior in presence of dynamic electromagnetic fields. From magnetostrictive and piezoelectric constitutive equations, and using an equation of motion, magnetic-mechanical-electric equations are: obtained by building a symmetric adhoc equivalent circuit about the magnetoelectric (ME) coupling. The coefficients of the direct and converse effects are simulated. The circuit is further used to predict the voltage coefficients of laminated composite. The multilayer material is found to have significantly higher ME coefficients near resonance frequency. The ME coefficients and the voltage coefficients change significantly with the configuration of the multilayer, more specifically when the laminate operates in longitudinal-transverse (L-T) and transverse-transverse (T–T) modes