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Computer Aided Optimisation of Profile Extrusion Dies

Definition and Assessment of the Objective Function
  • I. Szarvasy , J. Sienz , J. F. T. Pittman and E. Hinton
Published/Copyright: June 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 15 Issue 1

Abstract

An objective function is proposed for use in optimisation of profile die design, and defined in terms of mass flow rates to topological partitions of the profile cross section. In a series of uPVC extrusion trials its dependence on land channel height is investigated for two profiles to assess its suitability for gradient based optimisation of flow distribution. Preliminary finite element flow simulations are carried out, and comparisons of computed and experimental objective function values show that the mathematical modelling should be extended to include extensional effects and draw down at the die exit. Examination of the experimental profiles indicates the limitations of die optimisation in determining the detailed geometry of the finished profile cross sections.

* Mail address: Dr. J. F. T. Pittman, University of Wales Swansea, Dept. of Civil Eng., Singleton Park, Swansea, SA2 8PP, Wales, UK
Received: 1999-7-21
Accepted: 1999-11-17
Published Online: 2013-06-06
Published in Print: 2000-03-01

© 2000, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Editorial
  2. Sixth of a Series: Pioneer of Man-Made Fibers and Solution Spinning Louis-Marie-Hilaire Bernigaud, Comte de Chardonnet
  3. Screw Extrusion
  4. A Network Analysis of a Screw Mixing Zone
  5. Experimental and Numerical Study of Rhomboidal Mixing Sections
  6. Reactive Extrusion
  7. Bulk Polymerization of ∊-Caprolactone in Twin Screw Extruder
  8. Die Extrusion
  9. Computer Aided Optimisation of Profile Extrusion Dies
  10. Fibers and Films
  11. An Investigation of Venturi and Coanda Effects in Blown Film Cooling
  12. Blends
  13. Solidification Behaviour of PA6/iPP Blends at High Cooling Rates
  14. Polymer Blends with Fibrillar Phase Morphology Prepared by Self-Reinforcing Technique
  15. Molding
  16. Compressive Squeeze Flow of Generalized Newtonian Fluids with Apparent Wall Slip
  17. Comparative Study of Ziegler-Natta and Metallocene Based Polypropylenes in Injection Molding
  18. The Pressure-Volume-Temperature Behavior Polyethylene Melts
  19. Evaluation of the Thermal Behaviour of Injection Moulds
  20. Polymer Solidification under Pressure and High Cooling Rates
https://doi.org/10.3139/217.1577

Articles in the same Issue

  1. Editorial
  2. Sixth of a Series: Pioneer of Man-Made Fibers and Solution Spinning Louis-Marie-Hilaire Bernigaud, Comte de Chardonnet
  3. Screw Extrusion
  4. A Network Analysis of a Screw Mixing Zone
  5. Experimental and Numerical Study of Rhomboidal Mixing Sections
  6. Reactive Extrusion
  7. Bulk Polymerization of ∊-Caprolactone in Twin Screw Extruder
  8. Die Extrusion
  9. Computer Aided Optimisation of Profile Extrusion Dies
  10. Fibers and Films
  11. An Investigation of Venturi and Coanda Effects in Blown Film Cooling
  12. Blends
  13. Solidification Behaviour of PA6/iPP Blends at High Cooling Rates
  14. Polymer Blends with Fibrillar Phase Morphology Prepared by Self-Reinforcing Technique
  15. Molding
  16. Compressive Squeeze Flow of Generalized Newtonian Fluids with Apparent Wall Slip
  17. Comparative Study of Ziegler-Natta and Metallocene Based Polypropylenes in Injection Molding
  18. The Pressure-Volume-Temperature Behavior Polyethylene Melts
  19. Evaluation of the Thermal Behaviour of Injection Moulds
  20. Polymer Solidification under Pressure and High Cooling Rates
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