The effects of material strain-rate dependence on necking and neck propagation in polymeric fibres are analyzed. Using a finite element scheme together with an elastic-viscoplastic constitutive model the entire load-deformation histories of round specimens are computed. Stress-strain distributions as well as the evolution of the specimen profiles are given at various stages of the axisymmetric stretching process. Comparisons with rate-independent response are also presented.
Analysis of Neck Propagation in Polymeric Fibres Including the Effects of Viscoplasticity
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Tug¯cu, P., and Neale, K. W. (October 1, 1988). "Analysis of Neck Propagation in Polymeric Fibres Including the Effects of Viscoplasticity." ASME. J. Eng. Mater. Technol. October 1988; 110(4): 395–400. https://doi.org/10.1115/1.3226068
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