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Proceedings Paper

Model development for piezoelectric polymer unimorphs
Author(s): G. Daspit; C. Martin; J-H. Pyo; C. Smith; H. To; K. M. Furati; Zoubeida Ounaies; Ralph C. Smith
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Paper Abstract

This paper addresses the development of distributed models for unimorphs comprised of an active PVDF layer bonded to an inactive polyimide layer. Thin beam theory is employed to quantify displacements along the unimorph length as a function of input voltages. The theory is based on the assumption of linear piezoelectric relations but is posed in a format which can be directly extended to incorporate dielectric hysteresis and nonlinearities if the application warrants. A variety of structural damping models are considered and it is illustrated that in low drive regimes, the assumption of Kelvin-Voigt damping produces a unimorph model which accurately predicts the elliptic losses measured in experimental data.

Paper Details

Date Published: 10 July 2002
PDF: 11 pages
Proc. SPIE 4693, Smart Structures and Materials 2002: Modeling, Signal Processing, and Control, (10 July 2002); doi: 10.1117/12.475247
Show Author Affiliations
G. Daspit, Univ. of Alabama at Birmingham (United States)
C. Martin, Texas Tech Univ. (United States)
J-H. Pyo, Univ. of Maryland/College Park (United States)
C. Smith, North Carolina State Univ. (United States)
H. To, Temple Univ. (United States)
K. M. Furati, King Fahd Univ. of Petroleum and Minerals (Saudi Arabia)
Zoubeida Ounaies, NASA Langley Research Ctr. (United States)
Ralph C. Smith, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 4693:
Smart Structures and Materials 2002: Modeling, Signal Processing, and Control
Vittal S. Rao, Editor(s)

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