A multiphysics model for self-oscillatory ionic polymer-metal composite actuators

Doyeon Kim; Kwang J. Kim

doi:10.1117/12.654734

22 March 2006 A multiphysics model for self-oscillatory ionic polymer-metal composite actuators

Doyeon Kim, Kwang J. Kim

Proceedings Volume 6168, Smart Structures and Materials 2006: Electroactive Polymer Actuators and Devices (EAPAD); 61681X (2006) https://doi.org/10.1117/12.654734
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2006, San Diego, California, United States

Abstract

In our previous work [1], we have reported a novel approach to electrochemically driven Ionic Polymer-Metal Composites (IPMCs) that exhibit their self-oscillatory deformation in a cantilever bender configuration. When a constant current was imposed to IPMCs, under certain conditions IPMCs exhibit their periodic deformation. In order to better understand such an electro-chemo-mechanical behavior of IPMCs--particularly for self-oscillation--we have developed a multi- physics based mathematical model, which accounts for electrochemical and electromechanical phenomena, along with surface chemistry, simultaneously. A model study was performed to predict the kinetically driven potential oscillations for electrochemical oxidation of formaldehyde on the Pt-IPMC surface. The physical phenomena of the studied system are described in coupled differential equations. In addition, experiments were conducted to acquire important model parameters. The proposed model was implemented in a MATLAB platform. Seemingly, the model accurately predicts the self- oscillating and non-linear behavior IPMCs.

Citation Download Citation

Doyeon Kim and Kwang J. Kim "A multiphysics model for self-oscillatory ionic polymer-metal composite actuators", Proc. SPIE 6168, Smart Structures and Materials 2006: Electroactive Polymer Actuators and Devices (EAPAD), 61681X (22 March 2006); https://doi.org/10.1117/12.654734

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