Model for piezoelectric/ferroelectric composites polarized with interdigitated electrodes

To evaluate the proposed model, a representative elementary volume (REV) is analyzed with a finite element (FE) model using an ABAQUS/UEL piezoelectric brick and the same material models for each constituent of the composite. Practical examples are addressed with both, FE/REV and the proposed PCHM. Electromechanical responses predicted with both approaches are in good agreement. Numerical results illustrate the ability of the proposed PCHM to capture important aspects of piezoelectric devices such as quasi-linear range, as well as both, pressure and electric-field driven depolarization. Finally, a brief convergence analysis is performed indicating an encouraging computational performance of the proposed PCHM.