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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ayas, Can
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Topics
Publications (8/8 displayed)
- 2023Holistic computational design within additive manufacturing through topology optimization combined with multiphysics multi-scale materials and process modellingcitations
- 2023Design for material properties of additively manufactured metals using topology optimizationcitations
- 2022Combined effects of stress and temperature on hydrogen diffusion in non-hydride forming alloys applied in gas turbinescitations
- 2021Hydrogen diffusion under the effect of stress and temperature gradients
- 2019A mold insert case study on topology optimized design for additive manufacturing
- 2019Topology optimization of an injection mold insert with additive manufacturing constraints
- 2019Improving the manufacturability of metal AM parts
- 2010A continuum framework for grain boundary diffusion in thin film/substrate systemscitations
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document
Topology optimization of an injection mold insert with additive manufacturing constraints
Abstract
This work presents the redesign of an injection molding metal insert to be prototyped by the selective laser melting (SLM) process. The case study has been topology optimized to minimize its total mass while keeping the maximum von Mises stress and maximum displacement under load condition below chosen thresholds. Particular attention has been given to properly select the design space for the topology optimization (TO), taking care both of the industrial requirements and the simplifications needed to run the TO code. While the main TO has been performed with a commercially available software, a secondary optimization has been tried with in-house code to address the problem of local heat accumulation during the SLM manufacturing. Heat accumulation is a well-known issue for design features like overhangs and thin sections, and can cause issues such as poor surface finish and dross formation. A novel TO formulation is therefore employed to control AM associated local overheating by imposing a thermal constraint. The “hotspot indicator” is integrated with the standard compliance minimization TO problem, and a new design of the mold insert without local overheating is produced. Finally, a comparison between the two TO redesigns is briefly discussed.