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Thermoviscoelastic Calculation of Residual Stresses and Residual Shapes of Injection Molded Parts**

  • K. K. Kabanemi and M. J. Crochet
Published/Copyright: May 27, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 7 Issue 1

Abstract

The present paper describes a three-dimensional finite element method for calculating thermoviscoelastic stresses generated during cooling of injection molded parts. The initial temperature field corresponds to the end of the filling stage. The fully time-dependent algorithm is based on the calculation of the elastic response at every time step. The time-temperature equivalence is assumed for the non-isothermal behavior. At the end of the calculation, one obtains the residual stresses and the shape of molded parts at room temperature. The method is illustrated by means of four examples.

* Mail address: Prof. M. J. Crochet, Unité de Mécanique Appliquée, Place du Levant 2, 1348 Louvain-la-Neuve, Belgium.

** A partial version of the paper was presented at the 3rd International Conference on Numerical Methods in Industrial Forming Processes, Fort Collins, Colorado, June 26–30, 1989.

Received: 1991-6
Accepted: 1991-10
Published Online: 2013-05-27
Published in Print: 1992-03-01

© 1992, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Internal and Continuous Mixers
  4. Model Development for an Internal Mixer
  5. Simulation of Flow in a Farrel Continuous Mixer
  6. Extrusion
  7. Influence of Process Data on the Throughput of Large Extruders within the Range of 600 to 6 000 kg/h
  8. Conveying and Melting in Screw Extruders with Axial Screw Movement
  9. Thermo-viscous Effects in Extrusion of Planar Jets with Solidification
  10. Film
  11. Dynamics and Stability of Double Bubble Tubular Film Extrusion
  12. Melt Strength Behavior of Polyethylene Blends**
  13. Optical Properties and Orientation Development in Uniaxially Stretched Syndiotactic Polystyrene from Amorphous Precursors
  14. Molding
  15. Thermoviscoelastic Calculation of Residual Stresses and Residual Shapes of Injection Molded Parts**
  16. Analysis and Simulation of Structural Reaction Injection Molding (SRIM)
  17. Crystal Orientation in Injection Moldings of Flaky Filler-Filled Polypropylenes
  18. Erratum
  19. Molecular Orientation in Injection-molded Polypropylene Copolymers with Ethylene
https://doi.org/10.3139/217.920060

Articles in the same Issue

  1. Contents
  2. Contents
  3. Internal and Continuous Mixers
  4. Model Development for an Internal Mixer
  5. Simulation of Flow in a Farrel Continuous Mixer
  6. Extrusion
  7. Influence of Process Data on the Throughput of Large Extruders within the Range of 600 to 6 000 kg/h
  8. Conveying and Melting in Screw Extruders with Axial Screw Movement
  9. Thermo-viscous Effects in Extrusion of Planar Jets with Solidification
  10. Film
  11. Dynamics and Stability of Double Bubble Tubular Film Extrusion
  12. Melt Strength Behavior of Polyethylene Blends**
  13. Optical Properties and Orientation Development in Uniaxially Stretched Syndiotactic Polystyrene from Amorphous Precursors
  14. Molding
  15. Thermoviscoelastic Calculation of Residual Stresses and Residual Shapes of Injection Molded Parts**
  16. Analysis and Simulation of Structural Reaction Injection Molding (SRIM)
  17. Crystal Orientation in Injection Moldings of Flaky Filler-Filled Polypropylenes
  18. Erratum
  19. Molecular Orientation in Injection-molded Polypropylene Copolymers with Ethylene
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