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Title: | On the predictive/fitting capabilities of the advanced differential constitutive equations for linear polyethylene melts | ||||||||||
Author: | Pivokonský, Radek; Zatloukal, Martin; Filip, Petr | ||||||||||
Document type: | Peer-reviewed article (English) | ||||||||||
Source document: | Journal of Non-Newtonian Fluid Mechanics. 2008, vol. 150, issue 1, p. 56-64 | ||||||||||
ISSN: | 0377-0257 (Sherpa/RoMEO, JCR) | ||||||||||
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DOI: | https://doi.org/10.1016/j.jnnfm.2007.10.005 | ||||||||||
Abstract: | This contribution examines the capabilities of three differential constitutive models (XPP, PTT-XPP, and modified Leonov) in predicting rheological properties of two virtually linear polyethylene materials (HDPE Tipelin FS 450-26, mLLDPE Exact 0201) with specific attention to both steady as well as transient shear and uniaxial elongational flow situations. For each situation the (dis)advantages of the individual models are discussed and both, qualitative and quantitative model efficiency evaluation has been carried out. | ||||||||||
Full text: | https://www.sciencedirect.com/science/article/pii/S0377025707002133 | ||||||||||
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