Nonlinear viscoelastic response of thermoplastic-elastomer melts

Aleksey D. Drozdov; Erik A. Jensen; Jesper Christiansen deClaville

doi:10.4208/aamm.09-m0938

Nonlinear viscoelastic response of thermoplastic-elastomer melts

Aleksey D. Drozdov, Erik A. Jensen, Jesper Christiansen deClaville

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Observations are reported on thermoplastic elastomer (ethylene-octene copolymer) melt in small-amplitude shear oscillatory tests and start-up shear tests with various strain rates in the interval of temperatures between 120 and 210 °C. Based on the concept of heterogeneous non-affine polymer networks, constitutive equations are developed for the thermo-mechanical behavior of a melt at threedimensional deformations with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. The model is applied to the analysis of Poiseuille flow. The effects of temperature and pressure gradient on the steady velocity profile are studied numerically.

Original language	English
Pages (from-to)	1-31
Number of pages	31
Journal	Advances in Applied Mathematics and Mechanics
Volume	2
Issue number	1
DOIs	https://doi.org/10.4208/aamm.09-m0938
State	Published - 1 Jan 2010
Externally published	Yes

Keywords

Constitutive model
Elastomer melt
Non-affine polymer network
Poiseuille flow
Thermo-viscoelasticity

ASJC Scopus subject areas

Mechanical Engineering
Applied Mathematics

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10.4208/aamm.09-m0938

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abstract = "Observations are reported on thermoplastic elastomer (ethylene-octene copolymer) melt in small-amplitude shear oscillatory tests and start-up shear tests with various strain rates in the interval of temperatures between 120 and 210 °C. Based on the concept of heterogeneous non-affine polymer networks, constitutive equations are developed for the thermo-mechanical behavior of a melt at threedimensional deformations with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. The model is applied to the analysis of Poiseuille flow. The effects of temperature and pressure gradient on the steady velocity profile are studied numerically.",

keywords = "Constitutive model, Elastomer melt, Non-affine polymer network, Poiseuille flow, Thermo-viscoelasticity",

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AU - Jensen, Erik A.

AU - Christiansen deClaville, Jesper

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Y1 - 2010/1/1

N2 - Observations are reported on thermoplastic elastomer (ethylene-octene copolymer) melt in small-amplitude shear oscillatory tests and start-up shear tests with various strain rates in the interval of temperatures between 120 and 210 °C. Based on the concept of heterogeneous non-affine polymer networks, constitutive equations are developed for the thermo-mechanical behavior of a melt at threedimensional deformations with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. The model is applied to the analysis of Poiseuille flow. The effects of temperature and pressure gradient on the steady velocity profile are studied numerically.

AB - Observations are reported on thermoplastic elastomer (ethylene-octene copolymer) melt in small-amplitude shear oscillatory tests and start-up shear tests with various strain rates in the interval of temperatures between 120 and 210 °C. Based on the concept of heterogeneous non-affine polymer networks, constitutive equations are developed for the thermo-mechanical behavior of a melt at threedimensional deformations with finite strains. Adjustable parameters in the stress-strain relations are found by fitting the experimental data. The model is applied to the analysis of Poiseuille flow. The effects of temperature and pressure gradient on the steady velocity profile are studied numerically.

KW - Constitutive model

KW - Elastomer melt

KW - Non-affine polymer network

KW - Poiseuille flow

KW - Thermo-viscoelasticity

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Nonlinear viscoelastic response of thermoplastic-elastomer melts

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Keywords

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