File:CAVS MSU polymer model v1.pdf

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CAVS_MSU_polymer_model_v1.pdf(file size: 763 KB, MIME type: application/pdf)

This report presents the formulation of a three-dimensional, finite deformation, isothermal, viscoelastic-viscoplastic constitutive model for (thermoplastic) amorphous polymeric materials. The formulation follows a widely used theory for amorphous polymers as described by [Boyce et al., 1988], with the development framed in a thermodynamic setting as presented by [Anand and Ames, 2006]. Conceptually, the main features of the model can be described with a typical rheological model: a nonlinear Maxwell element in parallel with a nonlinear (hyperelastic) spring. The constitutive equations of the model are specialized to the one{dimensional case. The numerical integration of the one-dimensional equations and corresponding implementation in MATLAB are described. This implementation is then used to perform a parametric study of the model. This study shows that this initial version of the model reproduces typical features experimentally observed in the stress response of many amorphous polymeric materials.

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current16:44, 7 March 2016 (763 KB)Dkf11 (Talk | contribs)This report presents the formulation of a three-dimensional, finite deformation, isothermal, viscoelastic-viscoplastic constitutive model for (thermoplastic) amorphous polymeric materials. The formulation follows a widely used theory for amorphous poly...

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