Reference : A comparison of constitutive models for describing the flow of uncured styrene-butadi...
Scientific journals : Article
Engineering, computing & technology : Chemical engineering
Engineering, computing & technology : Materials science & engineering
Computational Sciences; Physics and Materials Science
http://hdl.handle.net/10993/42821
A comparison of constitutive models for describing the flow of uncured styrene-butadiene rubber
English
Rehor, Martin mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Gansen, Alex mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Sill, Clemens []
Polińska, Patrycja []
Westermann, Stephan []
Dheur, Jean []
Baller, Jörg mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Hale, Jack mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Dec-2020
Journal of Non-Newtonian Fluid Mechanics
Elsevier
286
104398
Yes (verified by ORBilu)
International
0377-0257
Amsterdam
Netherlands
[en] Burgers model ; rate-type fluid model ; viscoelasticity ; styrene-butadiene rubber ; experiment fitting
[en] Uncured styrene-butadiene rubber (SBR) can be modelled as a viscoelastic material with at least two different relaxation mechanisms. In this paper we compare multi-mode constitutive models combining two viscoelastic modes (linear and/or nonlinear) in three possible ways. Our particular choice of the two modes was inspired by models originally developed to describe the response of asphalt binders. We select the model that best fits the experimental data obtained from a modified stress relaxation experiment in the torsional configuration of the plate-plate rheometer. The optimisation of the five model parameters for each model is achieved by minimising the weighted least-squares distance between experimental observations and the computer model output using a tree-structured Parzen estimator algorithm to find an initial guess, followed by further optimisation using the Nelder-Mead simplex algorithm. The results show that the model combining the linear mode and the nonlinear mode is the most suitable variant to describe the observed behavior of SBR in the given regime. The predictive capabilities of the three models are further examined in changed experimental and numerical configurations. Full data and code to produce the figures in this article are included as supplementary material.
Fonds National de la Recherche - FnR
Researchers ; Professionals
http://hdl.handle.net/10993/42821
https://doi.org/10.6084/m9.figshare.7993205.v2
FnR ; FNR11617214 > Jörg Baller > SLIPEX > Incorporation of SLIP boundary conditions in EXtruder flow channel modelling > 01/10/2017 > 30/09/2019 > 2017

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
1-s2.0-S0377025720301555-main.pdfCC BY 4.0Publisher postprint2.1 MBView/Open

Bookmark and Share SFX Query

All documents in ORBilu are protected by a user license.