Modeling and measurement of nonlinear dynamic behavior in piezoelectric ceramics with application to 1-3 composites

摘要

The nonlinear vibratory behavior of a 1-3 piezoceramic composite is characterized theoretically and experimentally. The developed theoretical model for electroelastic behavior of the 1-3 composite follows conventional assumptions made by prior investigators but includes nonlinear terms to account for hysteresis in the embedded PZT phase. Experimental measurements of the quasistatic and dynamic mechanical response of the 1-3 with embedded PZT-4 or PZT-5H phases to harmonic electrical excitation over a range of excitation frequencies and two different mechanical loading conditions quantify the nature and level of nonlinearity and illustrate its dependence on the type of PZT material and the mechanical coupling conditions of the 1-3 to its surroundings. Good agreement exists between theoretical predictions and experimental measurements.