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Viscoelasticity and viscoplasticity of glassy polymers in the vicinity of the yield point

✍ Scribed by Aleksey D. Drozdov

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
615 KB
Volume
28
Category
Article
ISSN
0093-6413

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πŸ“œ SIMILAR VOLUMES

Effect of yielding on the viscoelastic r
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## Abstract Constitutive equations are derived for the nonlinear viscoelastic behavior of amorphous glassy polymers. The model is based on the theory of cooperative relaxation in a version of the trapping concept. Stress–strain relations are applied to fit experimental data for polycarbonate in the

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In the bulk, glassy polymers exhibit a nonlinear viscoelastic response during deformation. Stress or strain induced damage (i.e. crazing, microshear banding) results in the production of nonrecoverable work and observed nonlinearity. Stress or strain dependent shift factors have been used to mathema

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## Abstract Constitutive equations are derived for the time‐dependent behavior of semicrystalline polymers at isothermal loading with small strains. A semicrystalline polymer at temperatures above the glass‐transition point for its amorphous phase is thought of as a network of macromolecules bridge