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Proceedings Paper

A comprehensive dynamic actuation model for ionic polymer-metal composites
Author(s): L. Zhang; Y. W. Yang
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Paper Abstract

In this paper, a comprehensive actuation model for IPMC material is presented. The charge motion within the polyelectrolyte membrane under a dynamic electric potential is first investigated. Based on the Nernst-Planck equation, the Poisson's equation and the continuity equation, the charge redistribution under dynamic electric potential is formulated. Subsequently, the dynamic ion-ion interactions within the polyelectrolyte membrane clusters are presented. By analyzing the volumetric changes of the membrane clusters due to the electric field induced stresses and the elastic stresses in the backbones of the membrane, the bending strain and stress are determined. Finally, the bending moment expression due to the applied electric potential is obtained. By using this bending moment expression, the vibrations of a cantilevered IPMC sample under different electric excitations are calculated. The actuation characteristics of the IPMC are then discussed with comparison of experimental observations.

Paper Details

Date Published: 6 April 2009
PDF: 9 pages
Proc. SPIE 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009, 72871B (6 April 2009); doi: 10.1117/12.815780
Show Author Affiliations
L. Zhang, Nanyang Technological Univ. (Singapore)
Y. W. Yang, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 7287:
Electroactive Polymer Actuators and Devices (EAPAD) 2009
Yoseph Bar-Cohen; Thomas Wallmersperger, Editor(s)

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