On the modelling of electro-viscoelastic response of electrostrictive polyurethane elastomers

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Sammanfattning

Electroactive polymers (EAP) deform under electric fields. This effect in fact generates various new fields of engineering applications of high technological interest. As an advantage, EAP may undergo deformations much larger than those capable by electroactive ceramics-however, to the price of acting at comparatively low forces. As common for polymers, EAP exhibit time-dependent material behaviour. The model proposed in this contribution, on the one hand, captures these electro-viscoelastic effects and, on the other hand, also nicely fits into iterative finite element formulations in order to simulate general boundary value problems. While the deformation itself as well as the electric potential are introduced as global degrees of freedom, the internal variables accounting for the viscous response are incorporated at the so-called local integration point level. Apart form calibrating the model against experimental data, a simple coupled finite element example is studied to show the applicability of the finite deformation electro-viscoelastic formulation proposed.
Originalspråkengelska
Titel på värdpublikation9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics
FörlagIOP Publishing
Volym10
DOI
StatusPublished - 2010
Evenemang9th World Congress on Computational Mechanics/4th Asian Pacific Congress on Computational Mechanics, 2010 - San Francisco, US, Sydney, Australien
Varaktighet: 2010 juli 192010 juli 23
Konferensnummer: 9 / 4

Publikationsserier

Namn IOP Conference Series: Materials Science and Engineering
FörlagIOP
Volym10
ISSN (tryckt)1757-8981
ISSN (elektroniskt)1757-899X

Konferens

Konferens9th World Congress on Computational Mechanics/4th Asian Pacific Congress on Computational Mechanics, 2010
Land/TerritoriumAustralien
OrtSydney
Period2010/07/192010/07/23

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