Applying the finite-element method to determine the die swell phenomenon during the extrusion of glass rods with non-circular cross-sections
In the case of die-wall adhesion during the extrusion of inorganic glass melts, the emerging rod undergoes an undesired expansion, called the die-swell phenomenon, which impairs the precision of its shape. In order to predict the cross-sectional increase of the rod, a 3-dimensional finite-element mo...
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| Published in: | Journal of materials processing technology Vol. 70; no. 1; pp. 145 - 150 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier B.V
01-10-1997
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | In the case of die-wall adhesion during the extrusion of inorganic glass melts, the emerging rod undergoes an undesired expansion, called the die-swell phenomenon, which impairs the precision of its shape. In order to predict the cross-sectional increase of the rod, a 3-dimensional finite-element model has been developed, which can replace extensive experimental preparatory trials. The results obtained with the aid of computer-based simulated flow show a high level of agreement with corresponding experimental results and confirm the suitability of the procedure presented in this paper. The analysis of the influence that the most important test parameters and some fluid properties have on the die swell, supplies valuable information for extrusion processes currently in use. Furthermore, the suitability of the finite-element method in the case of different die cross-sections as well as in the case of the pull-extrusion process is demonstrated in an exemplary manner. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 0924-0136 |
| DOI: | 10.1016/S0924-0136(97)00053-8 |