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

Författare

Summary, in English

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.

Avdelning/ar

Publiceringsår

2010

Språk

Engelska

Publikation/Tidskrift/Serie

IOP Conference Series: Materials Science and Engineering

Volym

10

Dokumenttyp

Konferensbidrag

Förlag

IOP Publishing

Ämne

  • Mechanical Engineering

Nyckelord

  • electro-active polymers

Conference name

9th World Congress on Computational Mechanics/4th Asian Pacific Congress on Computational Mechanics, 2010

Conference date

2010-07-19 - 2010-07-23

Conference place

Sydney, Australia

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1757-8981
  • ISSN: 1757-899X