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Flow and Fiber Orientation Calculations in Reinforced Thermoplastic Extruded Tubes

  • G. Ausias , J. F. Agassant and M. Vincent
Published/Copyright: May 27, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 9 Issue 1

Abstract

A calculation of fiber orientation of reinforced thermoplastics in two tube die geometries is presented. The flow field and fiber motion are calculated using coupled anisotropic constitutive equation and equation of change for fiber orientation. A finite element method is used for the flow field computation, and a simplified characteristic method for the fiber orientation. Results show that fibers orient parallel to the tube axis in a classical die of constant radius in the final land whereas fibers have a more isotropic orientation in a die with a final divergent land. Experimental observations and quantification of fiber orientation in reinforced thermoplastic tubes extruded with the two dies are presented. Results of the calculation agree well with the experimental data for the classical die. For the diverging die, the agreement is good at the tube surface, but the calculation underestimates the degree of orientation perpendicular to the tube axis in the core of the tube.

* Mail address: Dr. M. Vincent, Centre de Mise en Forme des Matériaux, Ecole des Mines de Paris, BP 207, F-06904 Sophia-Antipolis Cedex, France.
Received: 1992-7-28
Accepted: 1993-6-30
Published Online: 2013-05-27
Published in Print: 1994-03-01

© 1994, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Ninth in a Series: Mitsubishi Heavy Industries: Road to a High Technology Giant
  5. Internal Mixers
  6. Two-Dimensional Dynamic Study of the Distributive Mixing in an Internal Mixer
  7. Screw Extrusion
  8. Design of Tightly Intermeshing Co-Rotating Twin Screw Extruders
  9. Devolatilization of Polymer Solutions
  10. Flow Mechanisms, Material Distributions and Phase Morphology Development in a Modular Intermeshing Counter-Rotating Twin Screw Extruder of Leistritz Design
  11. 3-D Flow Simulations of a Cavity Transfer Mixer
  12. Die Extrusion
  13. Flow and Fiber Orientation Calculations in Reinforced Thermoplastic Extruded Tubes
  14. Fiber Spinning
  15. Orientation Evolution in Convergent-Divergent Dies
  16. Molding
  17. Unsteady Flow of Semi-Concentrated Fiber Suspensions in Compression Molding
  18. Equation of State for Pure Polymeric Fluids Theory Based on An Improved Hole and Cell Model
  19. Residual Stresses in Quenched and Injection Moulded Products
  20. Image Simulation and Evaluation of Fiber Orientation Distribution
https://doi.org/10.3139/217.940051

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Ninth in a Series: Mitsubishi Heavy Industries: Road to a High Technology Giant
  5. Internal Mixers
  6. Two-Dimensional Dynamic Study of the Distributive Mixing in an Internal Mixer
  7. Screw Extrusion
  8. Design of Tightly Intermeshing Co-Rotating Twin Screw Extruders
  9. Devolatilization of Polymer Solutions
  10. Flow Mechanisms, Material Distributions and Phase Morphology Development in a Modular Intermeshing Counter-Rotating Twin Screw Extruder of Leistritz Design
  11. 3-D Flow Simulations of a Cavity Transfer Mixer
  12. Die Extrusion
  13. Flow and Fiber Orientation Calculations in Reinforced Thermoplastic Extruded Tubes
  14. Fiber Spinning
  15. Orientation Evolution in Convergent-Divergent Dies
  16. Molding
  17. Unsteady Flow of Semi-Concentrated Fiber Suspensions in Compression Molding
  18. Equation of State for Pure Polymeric Fluids Theory Based on An Improved Hole and Cell Model
  19. Residual Stresses in Quenched and Injection Moulded Products
  20. Image Simulation and Evaluation of Fiber Orientation Distribution
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