Dielectric elastomer energy harvesting undergoing polarization saturation

Liwu Liu; Xiaojian Luo; Yanju Liu; Jinsong Leng

doi:10.1117/12.915089

3 April 2012 Dielectric elastomer energy harvesting undergoing polarization saturation

Liwu Liu, Xiaojian Luo, Yanju Liu, Jinsong Leng

Proceedings Volume 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012; 83401V (2012) https://doi.org/10.1117/12.915089
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

Mechanical energy can be converted into electrical energy by using a dielectric elastomer generator. The elastomer is susceptible to various models of failure, including electrical breakdown, electromechanical instability, loss of tension, and rupture by stretching. The models of failure define a cycle of maximal energy that can be converted. On the other hand, when subjected to voltage, the charge will be induced on a dielectric elastomer. When the voltage is small, the charge increases with the voltage. Along with the continuously increase of voltage, when the charge approaches a certain value, it would become saturated. This paper develops a thermodynamic model of dielectric elastomers undergoing polarization saturation. We studied the typical failure model with three variables of Gent Model silicone energy harvester and obtained an analytical solution of the constitutive equation of dielectric elastomer undergoing polarization saturation. These results can be used to facilitate the design and manufacture of dielectric elastomer energy harvesters.

Citation Download Citation

Liwu Liu, Xiaojian Luo, Yanju Liu, and Jinsong Leng "Dielectric elastomer energy harvesting undergoing polarization saturation", Proc. SPIE 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012, 83401V (3 April 2012); https://doi.org/10.1117/12.915089

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