Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/38706

TitleDesign and optimization of an extrusion die for the production of wood–plastic composite profiles
Author(s)Gonçalves, Nelson Daniel Ferreira
Teixeira, P.
Ferrás, Luís Jorge Lima
Afonso, A. M.
Nóbrega, J. M.
Carneiro, O. S.
KeywordsExtrusion die design
flow balancing
Numerical simulation
Issue date2015
PublisherSociety of Plastics Engineers (SPE)
JournalPolymer Engineering and Science
CitationGonçalves, N. D., Teixeira, P., Ferrás, L. L., Afonso, A. M., Nóbrega, J. M., & Carneiro, O. S. (2015). Design and optimization of an extrusion die for the production of wood-plastic composite profiles. Polymer Engineering and Science. doi: 10.1002/pen.24024
Abstract(s)In this work, the optimization of an extrusion die designed for the production of a wood–plastic composite (WPC) decking profile is investigated. The optimization was performed with the help of numerical tools, more precisely, by solving the continuity and momentum conservation equations that govern such flow, and aiming to balance properly the flow distribution at the extrusion die flow channel outlet. To capture the rheological behavior of the material, we used a Bird-Carreau model with parameters obtained from a fit to the (shear viscosity versus shearrate) experimental data, collected from rheological tests. To yield a balanced output flow, several numerical runs were performed by adjusting the flow restriction at different regions of the flow-channel parallel zone crosssection. The simulations were compared with the experimental results and an excellent qualitative agreement was obtained, allowing, in this way, to attain a good balancing of the output flow and emphasizing the advantages of using numerical tools to aid the design of profile extrusion dies.
TypeArticle
URIhttps://hdl.handle.net/1822/38706
DOI10.1002/pen.24024
ISSN0032-3888
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:IPC - Artigos em revistas científicas internacionais com arbitragem

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