A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link Model
In this article, a multiscale simulation method of polymer melt injection molding filling flow is established by combining an improved smoothed particle hydrodynamics method and clustered fixed slip-link model. The proposed method is first applied to the simulation of HDPE melt in a classic Poiseuil...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/20/4334 |
| _version_ | 1811153719551590400 |
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| author | Mengke Ren Junfeng Gu Zheng Li Shilun Ruan Changyu Shen |
| author_facet | Mengke Ren Junfeng Gu Zheng Li Shilun Ruan Changyu Shen |
| author_sort | Mengke Ren |
| collection | DOAJ |
| description | In this article, a multiscale simulation method of polymer melt injection molding filling flow is established by combining an improved smoothed particle hydrodynamics method and clustered fixed slip-link model. The proposed method is first applied to the simulation of HDPE melt in a classic Poiseuille flow case, and then two high-speed and high-viscosity injection molding flow cases in two simple long 2D rectangular cavities with and without a circular obstacle, respectively, are analyzed. For each case, the macro velocity results, and the micro average number of entanglements <i>Z</i><sub>ave</sub> and orientation degree <i>S</i> results are demonstrated and discussed, and the changing trends of <i>Z</i><sub>ave</sub> and <i>S</i> are analyzed. The results of the two injection molding cases are compared, and the influence of the obstacle on the injection flow at both the macro and micro levels is analyzed. Furthermore, based on the multiscale results, reason of some structural features and defects in injection molded products are analyzed. |
| first_indexed | 2024-03-09T19:33:04Z |
| format | Article |
| id | doaj.art-d7a156bc40a54c46891e296df04aa004 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T19:33:04Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-d7a156bc40a54c46891e296df04aa0042023-11-24T02:07:25ZengMDPI AGPolymers2073-43602022-10-011420433410.3390/polym14204334A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link ModelMengke Ren0Junfeng Gu1Zheng Li2Shilun Ruan3Changyu Shen4State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, ChinaIn this article, a multiscale simulation method of polymer melt injection molding filling flow is established by combining an improved smoothed particle hydrodynamics method and clustered fixed slip-link model. The proposed method is first applied to the simulation of HDPE melt in a classic Poiseuille flow case, and then two high-speed and high-viscosity injection molding flow cases in two simple long 2D rectangular cavities with and without a circular obstacle, respectively, are analyzed. For each case, the macro velocity results, and the micro average number of entanglements <i>Z</i><sub>ave</sub> and orientation degree <i>S</i> results are demonstrated and discussed, and the changing trends of <i>Z</i><sub>ave</sub> and <i>S</i> are analyzed. The results of the two injection molding cases are compared, and the influence of the obstacle on the injection flow at both the macro and micro levels is analyzed. Furthermore, based on the multiscale results, reason of some structural features and defects in injection molded products are analyzed.https://www.mdpi.com/2073-4360/14/20/4334multiscale simulationinjection moldingsmoothed particle hydrodynamicsslip-link model |
| spellingShingle | Mengke Ren Junfeng Gu Zheng Li Shilun Ruan Changyu Shen A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link Model Polymers multiscale simulation injection molding smoothed particle hydrodynamics slip-link model |
| title | A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link Model |
| title_full | A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link Model |
| title_fullStr | A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link Model |
| title_full_unstemmed | A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link Model |
| title_short | A Multiscale Simulation of Polymer Melt Injection Molding Filling Flow Using SPH Method with Slip-Link Model |
| title_sort | multiscale simulation of polymer melt injection molding filling flow using sph method with slip link model |
| topic | multiscale simulation injection molding smoothed particle hydrodynamics slip-link model |
| url | https://www.mdpi.com/2073-4360/14/20/4334 |
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