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Using Multi-Objective Evolutionary Algorithms to Optimize Mechanical Properties of Injection Molded Parts

  • A. Gaspar-Cunha and J. C. Viana
Published/Copyright: April 30, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 20 Issue 3

Abstract

An automatic optimization methodology based on Multi-Objective Evolutionary Algorithms (MOEA) is proposed to optimize the mechanical properties of injection molded products. For that purpose an MOEA is linked to a commercially available mould filling computer simulator code, CMOLD. The developed optimization methodology was applied to a practical case study where the processing conditions are optimized as a function of a desired morphological state (skin thickness, degree of crystallinity and/or level of molecular orientation; these latter are interpreted in terms of thermomechanical indices) and envisaged mechanical performance at two strain rates levels (of the order of 10–4 and 102 s1). Generally, the optimization methodology proposed is able to take into account the influence of the process parameters and produce solutions that are physically consistent. The processing conditions maximizing the morphological state of the moldings and their mechanical performance are identified. This latter is firstly maximized individually for distinct strain-rates and then a simultaneous optimization for both low and high strain-rate response is performed. The optimized sets of processing conditions leading to the maximization of the mechanical performance are analyzed by the computation of two thermomechanical indices aiming at interpreted the resultant morphological state of the moldings.

∗ Mail address: J. C. Viana, Inst. of Polymers and Composites, Dept. of Polym. Eng., University of Minho, Campus Azurem, 4800-058 Guimarães, Portugal E-mail:

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Received: 2004-7-26
Accepted: 2005-4-14
Published Online: 2013-04-30
Published in Print: 2005-09-01

© 2005, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Assessment of the Degree of Mixedness of Filled Polymers
  5. Screw Extrusion
  6. Numerical Analysis of Rubber Moulding Using Finite Element Modelling
  7. Regular Contributed Articles
  8. Experimental Study on the Filling of a Micro Injection Molding with Cylindrical Dot Patterns
  9. The Gloss of Injection-Moulded Recovered Polypropylene
  10. Injection Moulding and Mechanical Properties of Recovered Polypropylene
  11. Advanced Finite Element 3D Injection Molding
  12. Using Multi-Objective Evolutionary Algorithms to Optimize Mechanical Properties of Injection Molded Parts
  13. On PVT and Rheological Measurements of Polymer Melts
  14. External Calibration in PA12 Tube Extrusion
  15. Screw Extrusion
  16. External Calibration in PA12 Tube Extrusion
  17. Regular Contributed Articles
  18. Two Dimensional Description of Pressure-Throughput Behaviour of Newtonian Materials Considering Wall Slippage Effects
  19. Experimental Studies and Modeling of Development of Dispersion and Fiber Damage in Continuous Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.1889

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Assessment of the Degree of Mixedness of Filled Polymers
  5. Screw Extrusion
  6. Numerical Analysis of Rubber Moulding Using Finite Element Modelling
  7. Regular Contributed Articles
  8. Experimental Study on the Filling of a Micro Injection Molding with Cylindrical Dot Patterns
  9. The Gloss of Injection-Moulded Recovered Polypropylene
  10. Injection Moulding and Mechanical Properties of Recovered Polypropylene
  11. Advanced Finite Element 3D Injection Molding
  12. Using Multi-Objective Evolutionary Algorithms to Optimize Mechanical Properties of Injection Molded Parts
  13. On PVT and Rheological Measurements of Polymer Melts
  14. External Calibration in PA12 Tube Extrusion
  15. Screw Extrusion
  16. External Calibration in PA12 Tube Extrusion
  17. Regular Contributed Articles
  18. Two Dimensional Description of Pressure-Throughput Behaviour of Newtonian Materials Considering Wall Slippage Effects
  19. Experimental Studies and Modeling of Development of Dispersion and Fiber Damage in Continuous Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
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