Domain motion modeling for hysteresis in piezoceramic materials under mechanical loading

摘要

The purpose of this study is to model domain motions of piezoceramic materials under mechanical loading to reproduce their hysteretic behaviors. Evolutions of remanent strain and remanent polarization are described by bridging the characteristics of microscopic domain distribution into macroscopic behaviors. Taking into account hysteretic behavior in unpoled piezoceramics, this model calculates electric displacement and longitudinal strain as a function of uniaxial mechanical field. Good quality of the formulation is demonstrated through comparison with experimental data. In addition, results confirm our choice of one single domain evolution law to describe domain motion in piezoceramics under mechanical and electrical loading.