Modelling electro-active polymers with a dispersion-type anisotropy
Hossain M, Steinmann P (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 27
Article Number: 025010
Journal Issue: 2
Abstract
We propose a novel constitutive framework for electro-active polymers (EAPs) that can take into account anisotropy with a chain dispersion. To enhance actuation behaviour, particle-filled EAPs become promising candidates nowadays. Recent studies suggest that particle-filled EAPs, which can be cured under an electric field during the manufacturing time, do not necessarily form perfect anisotropic composites, rather they create composites with dispersed chains. Hence in this contribution, an electro-mechanically coupled constitutive model is devised that considers the chain dispersion with a probability distribution function in an integral form. To obtain relevant quantities in discrete form, numerical integration over the unit sphere is utilized. Necessary constitutive equations are derived exploiting the basic laws of thermodynamics that result in a thermodynamically consistent formulation. To demonstrate the performance of the proposed electro-mechanically coupled framework, we analytically solve a non-homogeneous boundary value problem, the extension and inflation of an axisymmetric cylindrical tube under electro-mechanically coupled load. The results capture various electro-mechanical couplings with the formulation proposed for EAP composites.
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APA:
Hossain, M., & Steinmann, P. (2018). Modelling electro-active polymers with a dispersion-type anisotropy. Smart Materials and Structures, 27(2). https://doi.org/10.1088/1361-665X/aa9f88
MLA:
Hossain, Mokarram, and Paul Steinmann. "Modelling electro-active polymers with a dispersion-type anisotropy." Smart Materials and Structures 27.2 (2018).
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