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Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software
This work investigates crystallization modeling by modifying an open-source computational fluid dynamics code OpenFOAM. The crystallization behavior of high-density polyethylene (HDPE) is implemented according to theoretical and experimental literature. A number of physical interdependencies are inc...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7795716/ https://www.ncbi.nlm.nih.gov/pubmed/33396357 http://dx.doi.org/10.3390/polym13010138 |
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author | Krebelj, Kristjan Krebelj, Anton Halilovič, Miroslav Mole, Nikolaj |
author_facet | Krebelj, Kristjan Krebelj, Anton Halilovič, Miroslav Mole, Nikolaj |
author_sort | Krebelj, Kristjan |
collection | PubMed |
description | This work investigates crystallization modeling by modifying an open-source computational fluid dynamics code OpenFOAM. The crystallization behavior of high-density polyethylene (HDPE) is implemented according to theoretical and experimental literature. A number of physical interdependencies are included. The cavity is modeled as deformable. The heat transfer coefficient in the thermal contact towards the mold depends on contact pressure. The thermal conductivity is pressure- and crystallinity-dependent. Specific heat depends on temperature and crystallinity. Latent heat is released according to the crystallization progress and temperature. Deviatoric elastic stress is evolved in the solidified material. The prediction of the cavity pressure evolution is used for the assessment of the solution quality because it is experimentally available and governs the residual stress development. Insight into the thermomechanical conditions is provided with through-thickness plots of pressure, temperature and cooling rate at different levels of crystallinity. The code and simulation setup are made openly available to further the research on the topic. |
format | Online Article Text |
id | pubmed-7795716 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77957162021-01-10 Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software Krebelj, Kristjan Krebelj, Anton Halilovič, Miroslav Mole, Nikolaj Polymers (Basel) Article This work investigates crystallization modeling by modifying an open-source computational fluid dynamics code OpenFOAM. The crystallization behavior of high-density polyethylene (HDPE) is implemented according to theoretical and experimental literature. A number of physical interdependencies are included. The cavity is modeled as deformable. The heat transfer coefficient in the thermal contact towards the mold depends on contact pressure. The thermal conductivity is pressure- and crystallinity-dependent. Specific heat depends on temperature and crystallinity. Latent heat is released according to the crystallization progress and temperature. Deviatoric elastic stress is evolved in the solidified material. The prediction of the cavity pressure evolution is used for the assessment of the solution quality because it is experimentally available and governs the residual stress development. Insight into the thermomechanical conditions is provided with through-thickness plots of pressure, temperature and cooling rate at different levels of crystallinity. The code and simulation setup are made openly available to further the research on the topic. MDPI 2020-12-31 /pmc/articles/PMC7795716/ /pubmed/33396357 http://dx.doi.org/10.3390/polym13010138 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Krebelj, Kristjan Krebelj, Anton Halilovič, Miroslav Mole, Nikolaj Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software |
title | Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software |
title_full | Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software |
title_fullStr | Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software |
title_full_unstemmed | Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software |
title_short | Modeling Injection Molding of High-Density Polyethylene with Crystallization in Open-Source Software |
title_sort | modeling injection molding of high-density polyethylene with crystallization in open-source software |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7795716/ https://www.ncbi.nlm.nih.gov/pubmed/33396357 http://dx.doi.org/10.3390/polym13010138 |
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