Cyclic viscoplasticity of thermoplastic elastomers |
| |
Authors: | A D Drozdov J deC Christiansen |
| |
Affiliation: | (1) Department of Chemical Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105, Israel;(2) Department of Production, Aalborg University, Fibigerstraede 16, DK–9220 Aalborg, Denmark |
| |
Abstract: | Summary Observations are reported on a thermoplastic elastomer (ethylene-octene copolymer) in uniaxial cyclic tensile tests with a
strain-controlled program and maximum elongation ratios up to λmax = 2.0. A constitutive model is derived for the viscoplastic behavior of a polymer network with constrained chains at three-dimensional
deformations with finite strains. The stress–strain relations involve five adjustable parameters that are found by fitting
the experimental data. Good agreement is demonstrated between the observations and the results of numerical simulation. It
is shown that the model correctly predicts the mechanical response, and its parameters are affected by amplitude of cyclic
deformation in a physically plausible way. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|