@inproceedings{d001ed91e64a493587f49c7e78140286,
title = "Time dependent large principal deformation of polymers",
abstract = "A constitutive model which describes deformations of polymeric materials under small and large deformations is presented. It uses the kinetic theory of rubber elasticity as a starting point for the large deformation behavior and generalizes this theory to include the effect of rate dependence. The constitutive model reduces to (phenomenological) small strain linear viscoelasticity under vanishing strains, while at long times the response corresponds to that of a rubber-elastic material. The behavior of the model under constant strain rate, loading and unloading is examined in both the loading and unloading mode. As a result of appealing to physical/molecular concepts it provides naturally for simulation of a rate dependent yield phenomenon through intrinsic relaxation behavior without the specific introduction of a yield parameter or yield function. The effect of generalizing the rubber elasticity model to include compressibility is discussed. The investigation renders a material description, which, while possibly lacking in detail of species-specific behavior, reproduces major features of nonlinear and large deformation viscoelastic characteristics. These general features make the model suitable for investigating the influence of rate-dependent yielding and large deformation viscoelasticity in the solution of boundary value problems.",
author = "O'Dowd, {N. P.} and Knauss, {W. G.}",
year = "1993",
language = "English",
isbn = "0791812529",
series = "American Society of Mechanical Engineers, Materials Division (Publication) MD",
publisher = "Publ by ASME",
pages = "77--95",
editor = "M. Ramulu and R. Komanduri",
booktitle = "Use of Plastics and Plastic Composites",
note = "Proceedings of the 1993 ASME Winter Annual Meeting ; Conference date: 28-11-1993 Through 03-12-1993",
}