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Large nonlinear deflection behavior of IPMC actuators analyzed with an electromechanical model

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Abstract

This study presents an electromechanical engineering model for the analysis of the large deflection curves of ionic polymer-metal composite (IPMC) cantilever actuators under direct current (DC) voltages. In this paper, the longitudinal normal strain performance of the material was investigated using digital image correlation on a micro-scale. The deflection of the actuator is analytically obtained with the application of an elliptic integration method based on the relationship between strain gradient and excitation voltage, and the minimum excitation voltage is derived based on the assumption that the actuators have small deformations. The validity of the electromechanical model is then justified with the experimental results obtained from Pt- and Ag-IPMC actuators at various excitation voltages. The findings of this study confirm that the introduced electromechanical model can accurately describe the large nonlinear deflection behavior of IPMC actuators.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grants 11372132 and 11502109).

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Authors and Affiliations

  1. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, 212013, China

    H. G. Liu

  2. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    H. G. Liu & K. Xiong

  3. School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou, 510006, China

    K. Bian

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  1. H. G. Liu
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  2. K. Bian
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  3. K. Xiong
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Correspondence to K. Xiong.

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Liu, H.G., Bian, K. & Xiong, K. Large nonlinear deflection behavior of IPMC actuators analyzed with an electromechanical model. Acta Mech. Sin. 35, 992–1000 (2019). https://doi.org/10.1007/s10409-019-00866-x

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  • DOI: https://doi.org/10.1007/s10409-019-00866-x

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