期刊
MECHANICS OF MATERIALS
卷 138, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mechmat.2019.103172
关键词
Electro active polymers; IPMC; Actuator; Viscoelastic; Back-relaxation
资金
- University of Sistan and Baluchestan for this Research [9585]
A nonlinear dynamic viscoelastic model of an ionic polymer metal composite (IPMC) actuator is presented based on the viscoelastic constitutive equations and an energy-based variational approach to acquire dynamic and quasi-static response. For this purpose, the equation of motion of an IPMC actuator is obtained by considering the actuator as a cantilever viscoelastic beam and utlizing continuum mechanic relations, Euler-Bernoulli beam theory, Hamilton's principle, and electrochemical properties of ionomer. This new model can simulate time-dependent tip displacement of the IPMC actuators and predict the back-relaxation that occurs in the Nafion-based IPMC actuator under an imposed step voltage. The transfer function derived from the proposed model provides a good frequency response prediction in comparison to the experimental results.This model also can be utilized to obtain mechanical response and vibration analysis of the IPMC sensors.
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