1 April 2015 A physics-based model for actuation and sensing of ionic polymer metal composites
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Abstract
In this paper, we propose a novel modeling framework to study quasi-static large deformations and electrochemistry of ionic polymer metal composites (IPMCs). The chemoelectromechanical constitutive behavior is obtained from a Helmholtz free energy density, which accounts for mechanical stretching, ion mixing, and electric polarization. The framework is specialized to plane bending of thin IPMCs through a structural model, where the bending moment of the IPMC is computed from a one-dimensional modified Poisson-Nernst-Planck system. For small static deformations, we establish a semianalytical solution based on the method of matched asymptotic expansions, which we ultimately use to elucidate the physics of IPMC sensing and actuation.
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Youngsu Cha, Youngsu Cha, Maurizio Porfiri, Maurizio Porfiri, } "A physics-based model for actuation and sensing of ionic polymer metal composites", Proc. SPIE 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015, 94300G (1 April 2015); doi: 10.1117/12.2083646; https://doi.org/10.1117/12.2083646
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