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15 April 2016 Analytical approach on the performance of helical dielectric elastomer actuator
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This study takes the conceptual idea of the helical dielectric elastomer actuator (HDEA) and explores mathematical concepts for the actuator capabilities to provide a reasonable function in an industrial role. In the past, other researchers have demonstrated the contractile capabilities of the HDEA through experimental work and analytical modeling. The researchers in those work fabricated helical dielectric elastomer actuators with helical compliant electrodes interposed in an elastomeric insulator. Although an analytical electromechanical model was described, it was applicable only for relatively small strains and the elastomer was designed as a linearly elastic body. It is desirable to consider large strains for better prediction of the performance of the actuator. We begin our analysis by considering the 3D actuator as a purely hyperelastic model with no viscoelastic effects. The constructed mathematical concepts show the displacement, model capabilities, and also overall functionality of the HDEA. The electromechanical coupling of the actuator is modeled to produce a history of the actuator’s strain response for specific activation voltages. The performance of the HDEA is also numerically compared using a commercial grade software.
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Audrey Gbaguidi, Vamsi Krishna Konduru, and Daewon Kim "Analytical approach on the performance of helical dielectric elastomer actuator", Proc. SPIE 9798, Electroactive Polymer Actuators and Devices (EAPAD) 2016, 979814 (15 April 2016);

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