Ultraviolet-light-induced multi-physics behaviors of 0-3 polarized transparent PLZT plates: II. Finite element analysis and validation

摘要

This paper presents a novel finite element formulation for 0-3 polarized PbLaZrTi (PLZT) plates and a comparison of the predicted and measured bending displacements. The coupled multi-physics fields and Hamilton's principle for piezoelectric (PZT) materials are first extended to PLZT ceramics by including the anomalous photovoltaic and photo-thermal effects. The photo-induced non-uniform electrical field and mechanical strains across the thickness are modeled in the present finite element formulation for 0-3 polarized PLZT plates, and the associated actuator and sensor equations are derived. The transverse displacements of a 0-3 polarized PLZT plate are predicted using the present finite element formulation and compared with the measured data given in partI. A reasonably good correlation is noted for the transverse displacements at the ten measurement points.