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dc.contributor.author민승재-
dc.date.accessioned2022-12-05T05:11:40Z-
dc.date.available2022-12-05T05:11:40Z-
dc.date.issued2021-04-
dc.identifier.citationADDITIVE MANUFACTURING, v. 40, article no. 101920en_US
dc.identifier.issn2214-8604;2214-7810en_US
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S2214860421000853?via%3Dihuben_US
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/177939-
dc.description.abstractThis paper presents a systematic design procedure of shell-infill structures for additive manufacturing (AM). Specifically, multiscale topology optimization based on the homogenization design method is employed for the design of a structure composed of coated exterior and spatially-varying orthotropic interior. The proposed procedure consists of five sequential steps including homogenization, topology optimization, and de-homogenization processes. Through the homogenization step, the effective elasticity tensor of the orthotropic infill microstructure is prepared as a function of microstructure design variables. In the topology optimization step, microstructure design variables are optimized together with the density design variable, for the simultaneous design of the infill microstructure and coated macrostructure. Finally, a spatially-varying infill microstructure is restored using a de-homogenization process. This study proposes a practical de-homogenization scheme that restores a designed infill microstructure using the explicit geometry representation of rectangular void holes. The proposed scheme is suitable to generate a result in a Computer-Aided Design (CAD) format for AM. The effectiveness of the proposed design procedure is validated through two design examples for compliance minimization problem. In addition, designed shell-infill structures are fabricated using a multi-jet printing machine.en_US
dc.description.sponsorshipThis work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (NRF-2019R1A2C1002808), and GIST Research Institute (GRI) grant funded by the GIST in 2020.en_US
dc.languageenen_US
dc.publisherELSEVIERen_US
dc.subjectTopology optimizationen_US
dc.subjectHomogenization design methoden_US
dc.subjectOrthotropic infill structuresen_US
dc.subjectDe-homogenizationen_US
dc.subjectExplicit geometryen_US
dc.titleDesign of spatially-varying orthotropic infill structures using multiscale topology optimization and explicit de-homogenizationen_US
dc.typeArticleen_US
dc.relation.volume40-
dc.identifier.doi10.1016/j.addma.2021.101920en_US
dc.relation.journalADDITIVE MANUFACTURING-
dc.contributor.googleauthorLee, Jaewook-
dc.contributor.googleauthorKwon, Chiyoung-
dc.contributor.googleauthorYoo, Jeonghoon-
dc.contributor.googleauthorMin, Seungjae-
dc.contributor.googleauthorNomura, Tsuyoshi-
dc.contributor.googleauthorDede, Ercan M.-
dc.sector.campusS-
dc.sector.daehak공과대학-
dc.sector.department미래자동차공학과-
dc.identifier.pidseungjae-
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COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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