When subjected to a high electric field, dielectrics deform. For a hard dielectric, voltage-induced deformation is usually small, and the potential for deformation is determined by its breakdown voltage. If a dielectric is soft, the voltage-induced deformation is significantly large. The potential for deformation is determined by the breakdown voltage together with electromechanical instability and snap-through instability. Based on the theoretical researches conducted by Zhao and Suo [Phys. Rev. Lett. 104, 178302 (2010)] and Li et al. [Int. J. Smart Nano Mater. 2(2), 59-67 (2011)], taking the dielectric elastomer soft material as research object, we introduce three kinds of material limits: strain-stiffening, polarization saturation, and breakdown voltage. The effect of material limits on voltage-induced deformation is analyzed. Also investigated is the influence of pre-stretch and material parameters on the deformation. For a specific soft dielectric material under certain pre-stretch, the theoretical maximum electrical actuation deformation can be determined.
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1 August 2012
Research Article|
August 09 2012
Voltage-induced deformation in dielectric Available to Purchase
Liwu Liu;
Liwu Liu
1Department of Astronautical Science and Mechanics,
Harbin Institute of Technology (HIT)
, P.O. Box 301, No. 92 West Dazhi Street, Harbin 150001, People’s Republic of China
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Yanju Liu;
Yanju Liu
a)
1Department of Astronautical Science and Mechanics,
Harbin Institute of Technology (HIT)
, P.O. Box 301, No. 92 West Dazhi Street, Harbin 150001, People’s Republic of China
Search for other works by this author on:
Jinsong Leng
Jinsong Leng
a)
2
Centre for Composite Materials, Science Park of Harbin Institute of Technology (HIT)
, P.O. Box 3011, No. 2 YiKuang Street, Harbin 150080, People’s Republic of China
Search for other works by this author on:
Liwu Liu
1
Yanju Liu
1,a)
Jinsong Leng
2,a)
1Department of Astronautical Science and Mechanics,
Harbin Institute of Technology (HIT)
, P.O. Box 301, No. 92 West Dazhi Street, Harbin 150001, People’s Republic of China
2
Centre for Composite Materials, Science Park of Harbin Institute of Technology (HIT)
, P.O. Box 3011, No. 2 YiKuang Street, Harbin 150080, People’s Republic of China
a)
Authors to whom correspondence should be addressed. Electronic addresses: [email protected] and [email protected]. Tel./Fax: +86-451-86414825 and Tel./Fax: +86-451-86402328.
J. Appl. Phys. 112, 033519 (2012)
Article history
Received:
May 07 2012
Accepted:
July 11 2012
Citation
Liwu Liu, Yanju Liu, Jinsong Leng; Voltage-induced deformation in dielectric. J. Appl. Phys. 1 August 2012; 112 (3): 033519. https://doi.org/10.1063/1.4745023
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