Summary
A new constitutive model is derived for the viscoelastic behavior of polymers under non-isothermal loading. The model extends the concept of adaptive links (entanglements) between polymeric molecules to thermoviscoelastic media. By using experimental data for Nylon-6 and polyisobutylene in the vicinity of the glass-transition temperature, we find parameters of the model and study their dependence on temperature.
The model is employed for the numerical analysis of the material response to time-periodic loads under isothermal conditions and to time-varying loads under heating. The results of numerical simulation demonstrate fair agreement with experimental data.
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Accepted for publication 23 May 1996
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Drozdov, A. A model for the nonisothermal behavior of viscoelastic media. Archive of Applied Mechanics 67, 287–302 (1997). https://doi.org/10.1007/s004190050118
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DOI: https://doi.org/10.1007/s004190050118