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Proceedings Paper

The strain response of silicone dielectric elastomer actuators
Author(s): Guomao Yang; Guozhi Yao; Wei Ren; Georges Akhras; Jeff P. Szabo; Binu K. Mukherjee
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Paper Abstract

Dielectric elastomers are known to produce large transverse strains in response to electrically induced Maxwell stresses and thus provide a useful form of electromechanical actuation. The transverse strain response of silicone (Dow Corning HS III RTV) based Maxwell stress actuators have been measured earlier as a function of driving electric field, frequency and pre-load. Experimental results show that a pre-load initially causes an increase in the strain. However, this increase appears to be a function of the relative geometries of the electroded area and of the specimen itself. The transverse strains in these materials decrease when larger values of pre-load are applied. Models of hyperelasticity that are capable of describing the large deformation of polymer materials have been used to interpret our results. Numerical finite element simulations of the material’s behavior using a hyperelastic model provides good agreement with most of our observations on the electric field and pre-strain dependencies of the transverse strain.

Paper Details

Date Published: 6 May 2005
PDF: 10 pages
Proc. SPIE 5759, Smart Structures and Materials 2005: Electroactive Polymer Actuators and Devices (EAPAD), (6 May 2005); doi: 10.1117/12.598160
Show Author Affiliations
Guomao Yang, Royal Military College of Canada (Canada)
Guozhi Yao, Royal Military College of Canada (Canada)
Wei Ren, Royal Military College of Canada (Canada)
Georges Akhras, Royal Military College of Canada (Canada)
Jeff P. Szabo, Defence Research and Development Canada (Canada)
Binu K. Mukherjee, Royal Military College of Canada (Canada)


Published in SPIE Proceedings Vol. 5759:
Smart Structures and Materials 2005: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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