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Proceedings Paper

Model for rate-dependent hysteresis in piezoceramic materials operating at low frequencies
Author(s): Ralph C. Smith; Zoubeida Ounaies; Robert Wieman
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Paper Abstract

This paper addresses the modeling of certain rate-dependent mechanisms which contribute to hysteresis inherent to piezoelectric materials operating at low frequencies. While quasistatic models are suitable for initial materials characterization in some applications, the reduction in coercive field and polarization values which occur as frequencies increase must be accommodated to attain the full capabilities of the materials. The model employed here quantifies the hysteresis in two steps. In the first, anhysteretic polarization switching is modeled through the application of Boltzmann principles to balance the electrostatic and thermal energy. Hysteresis is then incorporated through the quantification of energy required to translate and bend domain walls pinned at inclusions inherent to the materials. The performance of the model is illustrated through a fit to low frequency data from a PZT5A wafer.

Paper Details

Date Published: 14 June 2000
PDF: 9 pages
Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); doi: 10.1117/12.388195
Show Author Affiliations
Ralph C. Smith, North Carolina State Univ. (United States)
Zoubeida Ounaies, NASA Langley Research Ctr. (United States)
Robert Wieman, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 3992:
Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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