| Téléchargement | - Voir la version finale : Additively manufactured conformal cooling channels through topology optimization (PDF, 2.9 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1007/s00158-024-03846-3 |
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| Auteur | Rechercher : Lamarche-Gagnon, Marc-Étienne1Identifiant ORCID : https://orcid.org/0000-0003-4420-0015; Rechercher : Molavi-Zarandi, Marjan; Rechercher : Raymond, Vincent1; Rechercher : Ilinca, Florin1 |
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| Affiliation | - Conseil national de recherches Canada. Automobile et les transports de surface
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| Bailleur de fonds | Rechercher : National Research Council Canada; Rechercher : Office of Energy Research and Development; Rechercher : Centre québécois de recherche et de développement de l’aluminium |
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| Format | Texte, Article |
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| Sujet | topology optimization; cooling channel; additive manufacturing; heat management |
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| Résumé | Cooling channels play a critical role in various casting and molding processes, impacting both the cycle time and quality of the product. As additive manufacturing technologies become increasingly prevalent, conventional straight-drilled channels are being progressively substituted by intricate cooling lines that conform to the contours of the fabricated part. This transition can lead to a significant reduction of the solidification time and temperature gradients, consequently lowering the occurrence of part defects. However, designing such channels becomes challenging as geometric complexity and manufacturing constraints increase. In this work, we present a density-based topology optimization approach to generate conformal cooling channels in molds and dies inserts. To mitigate temperature variations, the objective function is penalized using the temperature standard deviation of the insert cavity surface. A density-gradient-based constraint is further utilized to reduce the generation of overhanging structures and promote manufacturability. In particular, the use of this constraint leads to the generation of channels characterized by a teardrop-shaped cross section. The cooling efficiency of a selected optimized design is confirmed through computations using a body-fitted solver. The geometry is subsequently manufactured by Laser Powder Bed Fusion (LPBF) and experiments are conducted to compare its performance in comparison to a design featuring straight-drilled channels. The results demonstrate that the optimized geometry significantly enhances the heat extraction rate and further leads to a 43% reduction of the cavity temperature standard deviation. |
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| Date de publication | 2024-07-30 |
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| Maison d’édition | Springer |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | f9bcb45a-9880-426c-895d-d54c8d88a8fe |
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| Enregistrement créé | 2024-03-21 |
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| Enregistrement modifié | 2025-11-03 |
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