Modelling the nonlinear viscoelastic behavior of amorphous glassy polymers

A. D. Drozdov

doi:10.1016/S0895-7177(99)00147-8

Modelling the nonlinear viscoelastic behavior of amorphous glassy polymers

A. D. Drozdov

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Constitutive equations are derived for the nonlinear viscoelastic response of glassy polymers at isothermal loading with small strains. The model is based on the concept of temporary networks, where the rates of breakage and reformation for active chains depend on the specific entropy production. It is demonstrated that the stress-strain relations with a dissipation-driven internal clock adequately predict an apparent aging of polycarbonate observed in dynamic tests on stretched specimens.

Original language	English
Pages (from-to)	49-72
Number of pages	24
Journal	Mathematical and Computer Modelling
Volume	30
Issue number	5-6
DOIs	https://doi.org/10.1016/S0895-7177(99)00147-8
State	Published - 1 Sep 1999
Externally published	Yes

Keywords

Apparent aging
Constitutive equations
Glassy polymers
Nonlinear viscoelasticity
Temporary networks

ASJC Scopus subject areas

Modeling and Simulation
Computer Science Applications

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10.1016/S0895-7177(99)00147-8

Cite this

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abstract = "Constitutive equations are derived for the nonlinear viscoelastic response of glassy polymers at isothermal loading with small strains. The model is based on the concept of temporary networks, where the rates of breakage and reformation for active chains depend on the specific entropy production. It is demonstrated that the stress-strain relations with a dissipation-driven internal clock adequately predict an apparent aging of polycarbonate observed in dynamic tests on stretched specimens.",

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AB - Constitutive equations are derived for the nonlinear viscoelastic response of glassy polymers at isothermal loading with small strains. The model is based on the concept of temporary networks, where the rates of breakage and reformation for active chains depend on the specific entropy production. It is demonstrated that the stress-strain relations with a dissipation-driven internal clock adequately predict an apparent aging of polycarbonate observed in dynamic tests on stretched specimens.

KW - Apparent aging

KW - Constitutive equations

KW - Glassy polymers

KW - Nonlinear viscoelasticity

KW - Temporary networks

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DO - 10.1016/S0895-7177(99)00147-8

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ER -

Modelling the nonlinear viscoelastic behavior of amorphous glassy polymers

Abstract

Keywords

ASJC Scopus subject areas

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