FEA Study of Shear Mode Decoupling in Nonstandard Thin Plates of a Lead-Free Piezoelectric Ceramic

The finite-element analysis (FEA) is used in this work to study the impedance curves and modes of motion at resonance nonstandard shear plates, thickness poled, longitudinally excited. An ecological, lead-free, piezoelectric ceramic (1-x)(Bi 0.5 Na )TiO xmlns:xlink="http://www.w3.org/1999/xlink">3 - xBaTiO with x = 0.06 (BNBT6) composition studied. FEA modeling based on full matrix material coefficients. These are obtained from complex measurements two-thickness poled resonators. A as a function variations dimensions plate was accomplished (t for poling L w lateral dimensions, where distance between electrodes electrical excitation). We aimed further understanding, and, thus, ability control, coupling main modes. use uncoupled obtain parameters key issue their determination quantities, thus considering all losses, electromechanical, dielectric, elastic.