Plastic behavior of glassy polymers: Experimental and theoretical description based on three different approximations

Authors

  • Z. G. Pandermarakis,

    1. Department of Applied Mathematics and Physical Sciences, Section of Mechanics, National Technical University of Athens, 5 Heroes of Polytechnion, GR-15773 Athens, Greece
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  • G. Spathis

    Corresponding author
    1. Department of Applied Mathematics and Physical Sciences, Section of Mechanics, National Technical University of Athens, 5 Heroes of Polytechnion, GR-15773 Athens, Greece
    • Department of Applied Mathematics and Physical Sciences, Section of Mechanics, National Technical University of Athens, 5 Heroes of Polytechnion, GR-15773 Athens, Greece
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Abstract

Three different models were used for the description of viscoelastic, yielding, and hardening stages of the mechanical behavior of a network polymer. As a representative response we get unidirectional loading test at a wide range of strain rates with the appearance of a distinct yielding point, strain softening, and strain hardening. The present analysis shows that Rubin's kinematics formulation appears to have some benefits in contrast to the other two approximations. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 2032–2046, 2005

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