Wound roll dielectric elastomer actuators: Fabrication, analysis, and experiments

Arun Rajamani, Michael D. Grissom, Christopher D. Rahn, Qiming Zhang

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

Wound roll electroactive polymer actuators fabricated with dielectric elastomer (DE) materials provide high bandwidth actuation for robots, minipumps, loudspeakers, valves, and prosthetic devices. In this paper, we develop a DE wound roll actuator fabrication process that produces high strain (12%), reliable (3480 cycles at maximum strain), and stiff (144 N/m) actuators. An axisymmetric finite element model with electrostatic and radial bulk modulus nonlinearity predicts actuator displacement and stress. The maximum compressive radial stress occurs at the center of the innermost active layer. This layer also has the thinnest material, indicating the most likely failure point. The nonlinear model predicts actuator displacement in response to applied voltage and load, matching experiments to within 1 mm.

Original languageEnglish (US)
Pages (from-to)117-124
Number of pages8
JournalIEEE/ASME Transactions on Mechatronics
Volume13
Issue number1
DOIs
StatePublished - Feb 1 2008

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All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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