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Proceedings Paper

Large deformation modeling of swelling actuation in conjugated polymer systems
Author(s): Yang Fang; Thomas J. Pence; Xiaobo Tan
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Paper Abstract

Conjugated polymer actuators provide delicate solutions in biomimetic robotics and bio/micromanipulation. For these applications, it is highly desirable to have large deformation. Because linear elasticity theory is only valid when the strain is small, this poses significant challenges in the electromechanical modeling. In this paper, we use a nonlinear strain energy function to capture the stored elastic energy under actuation-induced swelling, which further allows us to compute the induced stress. Numerical method is used to obtain the deformation variables by solving the force and bending moment balance equations simultaneously. Experimental results for a trilayer conjugated polymer beam can be predicted by the proposed model better than the linear model. This proposed framework can also be applied to the analysis of large deformations of other electroactive polymers.

Paper Details

Date Published: 6 April 2009
PDF: 11 pages
Proc. SPIE 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009, 72871O (6 April 2009); doi: 10.1117/12.815786
Show Author Affiliations
Yang Fang, Michigan State Univ. (United States)
Thomas J. Pence, Michigan State Univ. (United States)
Xiaobo Tan, Michigan State Univ. (United States)

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

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