| Titre : |
Computer aided optimisation of profile extrusion dies : Definition and assessment of the objective function |
| Type de document : |
texte imprimé |
| Auteurs : |
I. Szarvasy, Auteur ; J. Sienz, Auteur ; J. F. T. Pittman, Auteur ; E. Hinton, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 28-39 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
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. Pre- liminary 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. |
| DOI : |
10.3139/217.1577 |
| En ligne : |
https://drive.google.com/file/d/1FiVPGZiYwzU51bv5zYRQu2EosOy9AoAE/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16071 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XV, N° 1 (03/2000) . - p. 28-39
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