Abstract
An electro-viscoelastic constitutive model based on non-constant relaxation time is proposed in this paper. We start by deriving the viscoelastic model from the well-known generalized Maxwell model (GMM) provided with stress–stretch-dependent relaxation time. Here, we consider relaxation time no longer as a constant but a variable that depends on dissipation or viscous process in polymer chains due to electroelastic stress–stretch. Comparison with the electro-viscoelastic experiments shows that our proposed model can capture well dielectric elastomer viscoelastic behaviors under time- and rate-dependent electric loadings for different pre-stretch values.
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We would like to thank the financial support from the Universitas Jenderal Soedirman (UNSOED) Indonesia, for the period of 2020–2021.
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Waluyo, S. An electro-viscoelastic micromechanical model with non-constant relaxation time. Acta Mech 233, 4505–4522 (2022). https://doi.org/10.1007/s00707-022-03344-x
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DOI: https://doi.org/10.1007/s00707-022-03344-x