A physics-based model for actuation and sensing of ionic polymer metal composites

Youngsu Cha; Maurizio Porfiri

doi:10.1117/12.2083646

1 April 2015 A physics-based model for actuation and sensing of ionic polymer metal composites

Youngsu Cha, Maurizio Porfiri

Proceedings Volume 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015; 94300G (2015) https://doi.org/10.1117/12.2083646
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

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.

Citation Download Citation

Youngsu Cha and 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); https://doi.org/10.1117/12.2083646

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