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Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing

Xuguang Xu, Wanglin Qiu, Dongdong Wan, Jin Wu, Feihu Zhao Orcid Logo, Yi Xiong Orcid Logo

Virtual and Physical Prototyping, Volume: 19, Issue: 1

Swansea University Author: Feihu Zhao Orcid Logo

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DOI (Published version): 10.1080/17452759.2023.2300666

Abstract

In material extrusion (MEX), it is challenging to accurately predict the steady and transient feeding forces at various polymer extrusion rates when printing island and thin-walled structures involving rapid start/stop or acceleration/deceleration, especially for semi-crystalline polymers. This rese...

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Published in: Virtual and Physical Prototyping
ISSN: 1745-2759 1745-2767
Published: Informa UK Limited 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa68088
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first_indexed 2024-10-29T09:29:02Z
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spelling v2 68088 2024-10-29 Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing 1c6e79b6edd08c88a8d17a241cd78630 0000-0003-0515-6808 Feihu Zhao Feihu Zhao true false 2024-10-29 EAAS In material extrusion (MEX), it is challenging to accurately predict the steady and transient feeding forces at various polymer extrusion rates when printing island and thin-walled structures involving rapid start/stop or acceleration/deceleration, especially for semi-crystalline polymers. This research presents a non-isothermal viscoelastic Computational Fluid Dynamics model to investigate the steady and transient feeding forces, as well as the phase transition process and viscoelastic behaviour of polylactic acid (PLA), a semi-crystalline polymer, during the extrusion process. The study establishes a relationship between polymer flow and viscoelastic stress, demonstrating that the elastic effect during extrusion is more significant than the viscous effect, particularly at higher feeding rates. Furthermore, the study uncovers critical aspects of PLA melt flow behaviour during the MEX process, laying the foundation for future research and optimisation of MEX printing processes. Journal Article Virtual and Physical Prototyping 19 1 Informa UK Limited 1745-2759 1745-2767 31 12 2024 2024-12-31 10.1080/17452759.2023.2300666 http://dx.doi.org/10.1080/17452759.2023.2300666 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University This work was supported by National Natural Science Foundation of China: [Grant Number grant number 52105261] Guangdong Innovative and Entrepreneurial Research Team Program: [Grant Number 2021ZT09X256] Shenzhen Science and Technology Innovation Committee: [Grant Number JCYJ20210324104610028] 2024-10-29T09:29:03.0757585 2024-10-29T09:24:33.4412143 Faculty of Science and Engineering School of Engineering and Applied Sciences - Biomedical Engineering Xuguang Xu 1 Wanglin Qiu 2 Dongdong Wan 3 Jin Wu 4 Feihu Zhao 0000-0003-0515-6808 5 Yi Xiong 0000-0002-0184-8607 6
title Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing
spellingShingle Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing
Feihu Zhao
title_short Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing
title_full Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing
title_fullStr Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing
title_full_unstemmed Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing
title_sort Numerical modelling of the viscoelastic polymer melt flow in material extrusion additive manufacturing
author_id_str_mv 1c6e79b6edd08c88a8d17a241cd78630
author_id_fullname_str_mv 1c6e79b6edd08c88a8d17a241cd78630_***_Feihu Zhao
author Feihu Zhao
author2 Xuguang Xu
Wanglin Qiu
Dongdong Wan
Jin Wu
Feihu Zhao
Yi Xiong
format Journal article
container_title Virtual and Physical Prototyping
container_volume 19
container_issue 1
publishDate 2024
institution Swansea University
issn 1745-2759
1745-2767
doi_str_mv 10.1080/17452759.2023.2300666
publisher Informa UK Limited
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Biomedical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Biomedical Engineering
url http://dx.doi.org/10.1080/17452759.2023.2300666
document_store_str 0
active_str 0
description In material extrusion (MEX), it is challenging to accurately predict the steady and transient feeding forces at various polymer extrusion rates when printing island and thin-walled structures involving rapid start/stop or acceleration/deceleration, especially for semi-crystalline polymers. This research presents a non-isothermal viscoelastic Computational Fluid Dynamics model to investigate the steady and transient feeding forces, as well as the phase transition process and viscoelastic behaviour of polylactic acid (PLA), a semi-crystalline polymer, during the extrusion process. The study establishes a relationship between polymer flow and viscoelastic stress, demonstrating that the elastic effect during extrusion is more significant than the viscous effect, particularly at higher feeding rates. Furthermore, the study uncovers critical aspects of PLA melt flow behaviour during the MEX process, laying the foundation for future research and optimisation of MEX printing processes.
published_date 2024-12-31T09:29:02Z
_version_ 1814240053451292672
score 11.035634

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