Upper bound of feed rates in thermoplastic material extrusion additive manufacturing
In this work, we develop a simple model to determine the upper bound of feed rates that do not cause jamming in material extrusion additive manufacturing, also known as fused deposition modeling (FDM)™ or fused-filament fabrication (FFF). We first derive a relation between the tube temperature and P...
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Published in | Additive manufacturing Vol. 32; p. 101019 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Netherlands
Elsevier B.V
01.03.2020
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Subjects | |
Online Access | Get full text |
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Summary: | In this work, we develop a simple model to determine the upper bound of feed rates that do not cause jamming in material extrusion additive manufacturing, also known as fused deposition modeling (FDM)™ or fused-filament fabrication (FFF). We first derive a relation between the tube temperature and Péclet number for the solid portion of polymer filaments. We focus on the boundary between the solid and molten polymer in the heated portion of the tube. We find the Péclet number that corresponds to the point at which this boundary makes contact with the nozzle, and identify this as the upper bound of the feed rate. We compare our predictions to experimental results. We find good agreement for tube temperatures sufficiently above the glass-transition temperature, which is the temperature region of typical additive manufacturing. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Official contribution of the National Institute of Standards and Technology; not subject to copyright in the United States. |
ISSN: | 2214-8604 2214-7810 |
DOI: | 10.1016/j.addma.2019.101019 |