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Numerical Simulation of Highly Viscoelastic Polymer Melts using VF and DEVSS Methods
Author(s) -
AlBaldawi Ammar,
Wünsch Olaf
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110271
Subject(s) - viscoelasticity , elongation , anisotropy , shear (geology) , flow (mathematics) , shear flow , work (physics) , materials science , mechanics , tensor (intrinsic definition) , computer science , mathematics , physics , thermodynamics , geometry , composite material , optics , ultimate tensile strength
Viscoelastic polymer melts are usually modeled with a macro approch. This is done using an anisotropic mobility tensor to generalize the Maxwell model. In recent works the use of micro approches is increasing, e.g. the so‐called POM‐POM model. In this work a frame independent flow type property is introduced in order to help visualizing the elongation and shear regions in a 3D flow. Which in turn helps to choose the right material model, since the model parameters are adjusted with 1D shear flows and the elongation properties are mostly neglected. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)