Multiphysics modelling of powder bed fusion for polymers
Polymeric materials for powder bed fusion additive manufacturing have been attracting extensive research interest due to their vast potential for fabricating end-use functional parts. Here, a high-fidelity multiphysics approach combining the discrete element model with the computational fluid dynami...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-12-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17452759.2023.2257191 |
| _version_ | 1797640979105185792 |
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| author | Pengfei Tan Meixin Zhou Chao Tang Yu Su H. Jerry Qi Kun Zhou |
| author_facet | Pengfei Tan Meixin Zhou Chao Tang Yu Su H. Jerry Qi Kun Zhou |
| author_sort | Pengfei Tan |
| collection | DOAJ |
| description | Polymeric materials for powder bed fusion additive manufacturing have been attracting extensive research interest due to their vast potential for fabricating end-use functional parts. Here, a high-fidelity multiphysics approach combining the discrete element model with the computational fluid dynamics model has been developed to simulate the printing process of polymers in powder bed fusion, involving powder recoating, melting, and coalescence. The developed approach considers particle flow dynamics, the reflection, absorption, and transmission of infrared laser radiation, and the viscous flow of polymer melt. The pore formation mechanisms due to lack of fusion and gas entrapment in polyamide 12 parts printed via selective laser sintering are studied. The simulation results reveal that lower polymer viscosity would be beneficial to the densification rate of the printed parts. Excessively small powder particles would degrade powder bed quality due to the agglomeration of polymer powder, thus leading to high porosity in the printed parts. |
| first_indexed | 2024-03-11T13:37:59Z |
| format | Article |
| id | doaj.art-ffbf545676e240579ce77ba4e06d1b18 |
| institution | Directory Open Access Journal |
| issn | 1745-2759 1745-2767 |
| language | English |
| last_indexed | 2024-03-11T13:37:59Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj.art-ffbf545676e240579ce77ba4e06d1b182023-11-02T14:47:05ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672023-12-0118110.1080/17452759.2023.22571912257191Multiphysics modelling of powder bed fusion for polymersPengfei Tan0Meixin Zhou1Chao Tang2Yu Su3H. Jerry Qi4Kun Zhou5Nanyang Technological UniversityNanyang Technological UniversityInstitute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR)Beijing Institute of TechnologyThe George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologyNanyang Technological UniversityPolymeric materials for powder bed fusion additive manufacturing have been attracting extensive research interest due to their vast potential for fabricating end-use functional parts. Here, a high-fidelity multiphysics approach combining the discrete element model with the computational fluid dynamics model has been developed to simulate the printing process of polymers in powder bed fusion, involving powder recoating, melting, and coalescence. The developed approach considers particle flow dynamics, the reflection, absorption, and transmission of infrared laser radiation, and the viscous flow of polymer melt. The pore formation mechanisms due to lack of fusion and gas entrapment in polyamide 12 parts printed via selective laser sintering are studied. The simulation results reveal that lower polymer viscosity would be beneficial to the densification rate of the printed parts. Excessively small powder particles would degrade powder bed quality due to the agglomeration of polymer powder, thus leading to high porosity in the printed parts.http://dx.doi.org/10.1080/17452759.2023.2257191additive manufacturingselective laser sinteringpolymersnumerical modellingporosity |
| spellingShingle | Pengfei Tan Meixin Zhou Chao Tang Yu Su H. Jerry Qi Kun Zhou Multiphysics modelling of powder bed fusion for polymers Virtual and Physical Prototyping additive manufacturing selective laser sintering polymers numerical modelling porosity |
| title | Multiphysics modelling of powder bed fusion for polymers |
| title_full | Multiphysics modelling of powder bed fusion for polymers |
| title_fullStr | Multiphysics modelling of powder bed fusion for polymers |
| title_full_unstemmed | Multiphysics modelling of powder bed fusion for polymers |
| title_short | Multiphysics modelling of powder bed fusion for polymers |
| title_sort | multiphysics modelling of powder bed fusion for polymers |
| topic | additive manufacturing selective laser sintering polymers numerical modelling porosity |
| url | http://dx.doi.org/10.1080/17452759.2023.2257191 |
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