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Modeling of Ionic Polymer Metal Composite (IPMC) Actuator Dynamics Using Large Deflection Beam Model

[+] Author Affiliations
Shivakanth Gutta, Joon S. Lee, Mohamed B. Trabia, Woosoon Yim

University of Nevada at Las Vegas, Las Vegas, NV

Paper No. IMECE2007-41517, pp. 105-112; 8 pages
doi:10.1115/IMECE2007-41517
From:
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 10: Mechanics of Solids and Structures, Parts A and B
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4304-1 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME

abstract

In this paper, we introduce a novel approach to model the dynamics of segmented Ionic Polymer Metallic Composite (IPMC) actuator. The IPMC actuator is activated using input voltage to its various segments. The proposed finite element approach combines the RC electrical model and a model that describes large deformations of mechanical beams. In the proposed modeling scheme, a local coordinate frame is attached to each beam element that undergoes rigid body motion in addition to elastic deformation. The elastic deformation of the element is modeled using the assumptions of the large deformation beam model. The proposed method has the advantage of accurately modeling large deflection of the IPMC beam actuator using relatively small number of elements. Experiments are conducted to validate the proposed method.

Copyright © 2007 by ASME

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