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Determination of pressure drop in polymer flow in toroidaI channels using the Herschel-BulkIey fluid model

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Języki publikacji
EN
Abstrakty
EN
Plastics forming is a complex process and therefore the knowledge of individual methods and their implementation in practice is of crucial importance in obtaining the desired effects in production. The study of material properties and mechanisms goveming the processes and phenomena taking place during forming is decisive in obtaining a perfect tinished product. The polymer flow in toroidal concave and convex channels is considered in the paper. The Herschel-Bulkley fluid model is used to describe the molten polymer. Dependences specifying pressure drops in a conical channel are given in the form of charts which show non-dimensional pressure distribution on the whole length of toroidal channels.
Rocznik
Strony
85--107
Opis fizyczny
Bibliogr. 13 poz., tab., wykr.
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autor
Bibliografia
  • Avenas P., Agassant J.-F. and Sergent J.P. (1982): La Mise en Forme des Matière Plastiques, Tec-Doc. Lavoisier, Paris.
  • Itoh K. (1974, 1975): Designing cross-head dies. - Japan Plastics, pt 1: vol.8, No.6, 1974, 21-27; pt 2: vol.9, No.1, 1975, 21-26; pt 3: vol.9, No.2, 1975, 21-27; pt 4: vol.9, No.3, 1975, 14-17.
  • Itoh K. (1977, 1978): Designing extrusion dies. - Japan Plastics, pt 1: vol.1, No.4, 1977, 16-18; pt 2: vol.11, No.5 and No.6, 1977, 10-15; pt 3: vol.12, No.1, 1978, 16-21; pt 4: vol.12, No.2, 1978, 15-21; pt 5: vol.12, No.3, 1978, 18-23; pt 6: vol.12, No.4, 1978, 11-19.
  • Michalski D. (2004): Mathematical modelling of polymers flows in extrusion heads and the channels of injection moulds (in Polish). - PhD Thesis, University of Zielona Góra, pp.1-247.
  • Plajer O. (1970): Praktische Rheologie fur Extrudierwerkzeuge. - Plastivarbeiter, Heft 1.
  • Torner R.W. (1974): Grundprocesse der Verarbeitung von Polymeren. - Leipzig, VEB Deutscher Verlag.
  • Walicka A. (1999): Analysis of polymers flow through dies of forming devices. - Applied Mechanics and Engineering, vol.4, No.2, pp.341-361.
  • Walicka A. (2002a): Rheodynamics of Non-Newtonian Fluids in Straight and Curved Channels (in Polish). - University Press, Zielona Góra, pp.1-307.
  • Валицка A. (2002b): Pотационные течения реологически сложных сред в узких кольцевых каналах (in Russian). - University Press, Zielona Góra, pp.1-385.
  • Walicka A. and Michalski D. (1997): Inertia effects in a micropolar model of metal flow within casting dies. - Mat. VIII Int. Conf.: "Developmental tendencies in productive processes", Zielona Góra, Section III, pp.163-168.
  • Walicki E. and Walicka A. (1998): Simulation of the polymer flow through dies of forming devices. - 5th European Rheology Conference, Portoroż, Slovenia, September 6-11, Mat. Konfer., pp.417-418.
  • Wilkinson W.L. (1963): Non-Newtonian Fluid (in Polish). - Warszawa, WNT.
  • Ziabicki A. (1970): Physics of forming processes of fibres from natural and syntetic polymers (in Polish). - Warszawa, WNT.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0028-0008
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