Translator Disclaimer
8 March 2014 Dynamic performance of silicone dielectric elastomer actuators with bi-stable buckled beams
Author Affiliations +
A significant limitation of large-scale dielectric electroactive polymers (DEAP) actuators is their slow and rate dependent dynamic response. We develop a procedure to characterize, model and test DEAP planar actuators with integrated bi-stable mechanisms. We describe a procedure to design the bi-stable element, a post-buckled slender beam, so as to improve the quasi-static performance of the actuator. The impact of the bi-stable mechanism on the dynamic performance of the actuator is studied by measuring its maximum planar peak-topeak displacement upon dynamic excitation. Surprisingly, the dynamic performance is strongly enhanced by the bi-stable mechanism. The frequency response flattens and becomes almost frequency independent up to the resonant frequency of the actuator. Moreover, a four-fold increase in active displacement stroke is achieved. The margin for further improvements is large, commensurated with the aims of the present research: namely the fabrication of large-scale, planar oscillating surfaces for turbulent flow control purposes.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Davide Gatti, Cameron Tropea, and Helmut F. Schlaak "Dynamic performance of silicone dielectric elastomer actuators with bi-stable buckled beams", Proc. SPIE 9056, Electroactive Polymer Actuators and Devices (EAPAD) 2014, 905638 (8 March 2014);


Back to Top