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Die geometrical effect on annular die swelling

โœ Scribed by Yongsok Seo; Eugene H. Wissler

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
566 KB
Volume
37
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Die geometrical effect on Newtonian annular jet swelling was studied using a finite element method. Numerical result shows what we expected in the limiting cases of die swelling with annular die geometries, i.e., variation of the die gap for straight dies follows the limiting behavior of capillary and planar die swellings. Also the effect of upstream die geometry was investigated.

The result shows that final extrudate dimensions are generally influenced by its previous history in the die, i.e., not only by shearing action but also by elongational effect caused by narrowing die gap.

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