Počet záznamů: 1
Applicability of the modified XPP model to a description of flow behaviour of polymeric materials
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SYSNO ASEP 0446251 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Applicability of the modified XPP model to a description of flow behaviour of polymeric materials Tvůrce(i) Pivokonský, Radek (UH-J) SAI, ORCID, RID
Filip, Petr (UH-J) ORCID, RID, SAI
Zelenková, Jana (UH-J) SAI, ORCID, RIDZdroj.dok. Novel Trends in Rheology VI. AIP Conference Proceeding, 1662. - Melville : AIP Publishing, 2015 / Zatloukal M - ISBN 978-0-7354-1306-1 Rozsah stran 020004-1-020004-14 Poč.str. 14 s. Forma vydání Tištěná - P Akce Novel Trends in Rheology /6./ Datum konání 28.07.2015-29.07.2015 Místo konání Zlín Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova XPP model ; rheological properties ; Leonov model ; LDPE materials ; HDPE materials Vědní obor RIV BK - Mechanika tekutin Institucionální podpora UH-J - RVO:67985874 UT WOS 000363246400004 EID SCOPUS 84984550771 DOI https://doi.org/10.1063/1.4918874 Anotace A 3N-parameter (3 parameters per mode) phenomenological modification of the XPP model for a description of the rheological properties of polymer melts is proposed. The predictive/fitting capabilities of the modified XPP model are compared with the Giesekus, XPP, and modified Leonov models using various polymeric materials in steady shear and uniaxial elongational flows. Its predictability of the rheological properties of the studied materials seems to be very good, including strain hardening in uniaxial elongational flow. Consequently, the GS derivative term was implemented into this modified XPP model. Then the model contains two linear parameters per mode (relaxation time and shear modulus) and two non-linear ones (the fitting parameter simultaneously controlling both strain hardening in elongation flow and shear thinning, and the slip parameter influencing almost solely shear thinning). The efficiency of this model is tested using LDPE and HDPE materials and compared with the modified Leonov model and network-based exponential PTT and PTT-XPP models, both of them containing the GS derivative term. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2016
Počet záznamů: 1