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A physics-based micromechanical model for electroactive viscoelastic polymers

Brighenti, Roberto ; Menzel, Andreas LU and Vernerey, Franck J. (2018) In Journal of Intelligent Material Systems and Structures 29(14). p.2902-2918
Abstract

Electroactive polymers with time-dependent behavior are considered in the present paper by way of a new physics-based micromechanical model; such viscoelastic response is described by the internal evolution of the polymer network, providing a new viewpoint on the stress relaxation occurring in elastomers. The main peculiarity of such internally rearranging materials is their capacity to locally reset their reference stress-free state, leading to a mechanical behavior that relaxes out (eases off) an induced stress state and that can thus be assimilated to a sort of internal self-healing process. Such high deformability and recoverability displayed by dynamically cross-linked polymers can be conveniently exploited when they are coupled in... (More)

Electroactive polymers with time-dependent behavior are considered in the present paper by way of a new physics-based micromechanical model; such viscoelastic response is described by the internal evolution of the polymer network, providing a new viewpoint on the stress relaxation occurring in elastomers. The main peculiarity of such internally rearranging materials is their capacity to locally reset their reference stress-free state, leading to a mechanical behavior that relaxes out (eases off) an induced stress state and that can thus be assimilated to a sort of internal self-healing process. Such high deformability and recoverability displayed by dynamically cross-linked polymers can be conveniently exploited when they are coupled in electromechanical problems; the deformation induced by an electric field can be easily tuned by the intensity of the electric field itself and the obtained shape can be maintained without any electric influence once the material microstructure has rearranged after a sufficient curing time. In the present paper, both features of the polymeric material, that is, internal remodeling and electromechanical coupled response, are considered and a theoretical framework is established to simulate representative boundary value problems.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
cross-link evolution, Electroactive polymers, electromechanical coupling, morphing
in
Journal of Intelligent Material Systems and Structures
volume
29
issue
14
pages
2902 - 2918
publisher
SAGE Publications
external identifiers
  • scopus:85049900675
ISSN
1045-389X
DOI
10.1177/1045389X18781036
language
English
LU publication?
yes
id
7f889959-22c1-4ee6-a86a-a990c8823443
date added to LUP
2018-08-02 09:31:49
date last changed
2021-09-15 05:13:54
@article{7f889959-22c1-4ee6-a86a-a990c8823443,
  abstract     = {<p>Electroactive polymers with time-dependent behavior are considered in the present paper by way of a new physics-based micromechanical model; such viscoelastic response is described by the internal evolution of the polymer network, providing a new viewpoint on the stress relaxation occurring in elastomers. The main peculiarity of such internally rearranging materials is their capacity to locally reset their reference stress-free state, leading to a mechanical behavior that relaxes out (eases off) an induced stress state and that can thus be assimilated to a sort of internal self-healing process. Such high deformability and recoverability displayed by dynamically cross-linked polymers can be conveniently exploited when they are coupled in electromechanical problems; the deformation induced by an electric field can be easily tuned by the intensity of the electric field itself and the obtained shape can be maintained without any electric influence once the material microstructure has rearranged after a sufficient curing time. In the present paper, both features of the polymeric material, that is, internal remodeling and electromechanical coupled response, are considered and a theoretical framework is established to simulate representative boundary value problems.</p>},
  author       = {Brighenti, Roberto and Menzel, Andreas and Vernerey, Franck J.},
  issn         = {1045-389X},
  language     = {eng},
  number       = {14},
  pages        = {2902--2918},
  publisher    = {SAGE Publications},
  series       = {Journal of Intelligent Material Systems and Structures},
  title        = {A physics-based micromechanical model for electroactive viscoelastic polymers},
  url          = {http://dx.doi.org/10.1177/1045389X18781036},
  doi          = {10.1177/1045389X18781036},
  volume       = {29},
  year         = {2018},
}