Research on the Dynamic Responses of Cylindrical Dielectric Elastomer Actuator Under the Varying Excitation Voltage#br#

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (19) : 218-223.

ZHU Yinlong 1 , WANG Huaming 2 , LUO Huaan2,3, ZHOU Hongping1

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Abstract

The dynamic performance of a dielectric electroactive polymer (EAP) cylindrical actuator was the foundation for its reasonable design, operation and optimization. Combined with the dielectric EAP electromechanical coupling equation, the dynamic formulation for the axial linear movement of actuator was also deduced. The relation between the displacement of the cylindrical actuator and the applied voltage was obtained through numerical solution of the dynamic equation, and the stability around the quasi static point was analyzed. Finally, the dynamic responses to applied step and periodic voltage were studied. The results show that the actuator is stable in the effective working range, the sudden step voltage can result in the vibration around the quasi-static position in axial direction, and the sinusoidal voltage generates quasi-periodic vibration including natural oscillation. The further analysis reveals that the electric breakdown of actuator readily occurs when applied the sudden step actuation voltage.

Key words

Hyperplastic / Dielectric electroactive polymer / Cylindrical actuator / Dynamic response

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ZHU Yinlong 1,WANG Huaming 2,LUO Huaan2,3, ZHOU Hongping1. Research on the Dynamic Responses of Cylindrical Dielectric Elastomer Actuator Under the Varying Excitation Voltage#br#[J]. Journal of Vibration and Shock, 2015, 34(19): 218-223

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