期刊
JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING
卷 3, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/jmmp3030068
关键词
AM limitations; topology optimization; overhang constraints
资金
- Portuguese Foundation for Science and Technology (FCT) [CENTRO-01-0145-FEDER-029713, SFRH/BD/120779/2016]
- UE/FEDER through the program CENTRO 2020
- UE/FEDER through the program COMPETE 2020
- program CENTRO 2020
- UE/FEDER [CENTRO-01-0247-FEDER-024039]
- [UID/EMS/00481/2013-FCT]
- [CENTRO-01-0145-FEDER-022083]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/120779/2016] Funding Source: FCT
The potential of Additive Manufacturing (AM) is high, with a whole new set of manufactured parts with unseen complexity being offered. However, the process has limitations, and for the sake of economic competitiveness, these should also be considered. Therefore, a computational methodology, capable of including the referenced limitations and providing initial solid designs for Selective Laser Melting (SLM) is the subject of the present work. The combination of Topology Optimization (TO) with the simplified fabrication model is the selected methodology. Its formulation, implementation, and integration on the classic TO algorithm is briefly discussed, being capable of addressing the minimum feature size and the overhang constraint limitations. Moreover, the performance and numerical stability of the methodology is evaluated, and numerical variables, such as the accuracy of structural equilibrium equations and the material interpolation model, are considered. A comparative study between these variables is presented. The paper then proposes an enhanced version of the selected methodology, with a better convergence towards a discrete solution.
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