About: Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model

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About: Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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. 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. (en)
Title	Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model (en)
skos:prefLabel	Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model Predictive/fitting capabilities of differential constitutive models for polymer melts - reduction of non-linear parameters in the eXtended Pom-Pom model (en)
skos:notation	RIV/67985874:_____/14:00428884!RIV15-GA0-67985874
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA103/09/2066)
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Filip, Petr Pivokonský, Radek
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav pro hydrodynamiku AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	38782
http://linked.open...ai/riv/idVysledku	RIV/67985874:_____/14:00428884
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	constitutive mode; XPP model; LDPE materials; strain hardening; elongational flow; shear flow (en)
http://linked.open.../riv/klicoveSlovo	shear flow strain hardening LDPE materials XPP model constitutive mode elongational flow
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[E4FEE157D020]
http://linked.open...i/riv/nazevZdroje	Colloid and Polymer Science
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Analysis and development of constitutive equations for description of non-Newtonian fluids
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	292
http://linked.open...iv/tvurceVysledku	Filip, Petr Pivokonský, Radek
http://linked.open...ain/vavai/riv/wos	000343910100001
issn	0303-402X
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s00396-014-3308-7

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