ISSN 0004-881X

An Indirect Implicit Model For Frequency Dependent Hystereses of Piezoelectric Ceramics

by H. Man(1), T. Furukawa(1), M. Hoffman(2), S. Imlao(2) and Z. H. Lou(2)
(1) School of Mechanical and Manufacturing Engineering, University of New South Wales, NSW 2052, Australia
(2) School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia

Abstract

The hysteretic behaviour of piezoelectric ceramics is not only dependent on the level of applied loading but also on frequency. In order to improve the performance of piezoelectric components, this paper presents an indirect implicit model for the hystereses of piezoelectric ceramics while considering the effect on various loading frequency of applied electrical field. The proposed model is able to reproduce the hysteretic response under these conditions. Experimental data of a type of piezoelectric ceramic, lead zirconate titanate (PZT), was used in the numerical examples to demonstrate the performance of the proposed model. Neural networks are used as the implicit modelling technique due to the capability of nonparametric mapping of the experimental data as well as the feature of interpolation. Results of the numerical examples show that the proposed model is able to simulate the desired frequency dependent hysteretic behaviour while providing good correlation with the experimental data.

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