Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F14%3A00428884" target="_blank" >RIV/67985874:_____/14:00428884 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s00396-014-3308-7" target="_blank" >http://dx.doi.org/10.1007/s00396-014-3308-7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00396-014-3308-7" target="_blank" >10.1007/s00396-014-3308-7</a>
Alternative languages
Result language
angličtina
Original language name
Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model
Original language description
A phenomenological modification of the eXtended Pom-Pom (XPP) model is proposed with the aim to reduce the number of free nonlinear parameters. The modified XPP model includes three parameters per mode in total (two linear viscoelastic parameters—linear relaxation time λ and shear modulus G, and one nonlinear parameter). The original XPP model contains five parameters (two linear viscoelastic parameters and three nonlinear ones, one nonlinear parameter participates in the second normal stress difference prediction). The predictive/fitting capabilities of the modified model are compared with the Giesekus, eXtended Pom-Pom, and modified Leonov models using various low-density PE materials in steady and transient shear and uniaxial elongational flows. It has been found that the modified model is capable of predicting/fitting the rheological properties, with the exception of the second normal stress difference, for studied LDPE materials with sufficient accuracy, including strain hardening in uniaxial elongational flow.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/GA103%2F09%2F2066" target="_blank" >GA103/09/2066: Analysis and development of constitutive equations for description of non-Newtonian fluids</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Colloid and Polymer Science
ISSN
0303-402X
e-ISSN
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Volume of the periodical
292
Issue of the periodical within the volume
11
Country of publishing house
DE - GERMANY
Number of pages
11
Pages from-to
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UT code for WoS article
000343910100001
EID of the result in the Scopus database
2-s2.0-84949097760