The dielectric elastomer (DE) is an insulating membrane with extra-ordinary properties which can meet various electromechanical failures during the actuation. In the current work, we measured breakdown voltage in DE membrane with special focus on the varying boundary stress during the actuation process. The boundary stress tuned deformation state, causing the membrane to deform out-of-plane before breakdown. A theoretical model is presented, involving the strain-stiffening effect in material and boundary stress effect in geometry, to estimate the dielectric breakdown voltage. The results agree with the experiments. Then, another set of experimental investigation is conducted to study the voltage-induced wrinkling of DE membrane. Steady wrinkles, without an accompany of electrical breakdown are attained and three different failure modes of DE membrane are classified into a phase chart. Finally, a qualitative theoretical explanation on wrinkling mechanism of DE membrane is presented and verified by experimental observations.
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ASME 2015 International Mechanical Engineering Congress and Exposition
November 13–19, 2015
Houston, Texas, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5752-6
PROCEEDINGS PAPER
Experimental Study on Electromechanical Failure of Dielectric Elastomer Actuator
Xuejing Liu,
Xuejing Liu
Xi’an Jiaotong University, Xi’an, China
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Shuhai Jia,
Shuhai Jia
Xi’an Jiaotong University, Xi’an, China
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Hualing Chen,
Hualing Chen
Xi’an Jiaotong University, Xi’an, China
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Yu Xing
Yu Xing
Xi’an Jiaotong University, Xi’an, China
Search for other works by this author on:
Xuejing Liu
Xi’an Jiaotong University, Xi’an, China
Shuhai Jia
Xi’an Jiaotong University, Xi’an, China
Hualing Chen
Xi’an Jiaotong University, Xi’an, China
Bo Li
Xi’an Jiaotong University, Xi’an, China
Yu Xing
Xi’an Jiaotong University, Xi’an, China
Paper No:
IMECE2015-50406, V009T12A079; 7 pages
Published Online:
March 7, 2016
Citation
Liu, X, Jia, S, Chen, H, Li, B, & Xing, Y. "Experimental Study on Electromechanical Failure of Dielectric Elastomer Actuator." Proceedings of the ASME 2015 International Mechanical Engineering Congress and Exposition. Volume 9: Mechanics of Solids, Structures and Fluids. Houston, Texas, USA. November 13–19, 2015. V009T12A079. ASME. https://doi.org/10.1115/IMECE2015-50406
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