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김승엽(SeungYup Kim),김기수(KiSu Kim),박성우(SungWoo Park) 한국추진공학회 2019 한국추진공학회 학술대회논문집 Vol.2019 No.5
Cold forging technology, which is one of the preferred forming methods in processing, is essential for production due to its high productivity. However, due to the nature of the body, which is difficult to do machanical working inside after forming processing, it is difficult to precisely mold internal product dimensions have. In order to improve the difficulty of precise forming process, the present interpretation is performed by setting various conditions and comparing the results. In addition, we analyzed the stress and the strain to minimize the defect rate and improve the precision of the internal shape forming.
디지털 트윈 구현을 위한 3차원 공간정보 구축사례 연구
김승엽 ( Seung-yub Kim ),이호현 ( Ho-hyun Lee ),최은수 ( Eun-soo Choi ),고제웅 ( Je-ung Go ) 한국지리정보학회 2020 한국지리정보학회지 Vol.23 No.3
In the 4th industrial revolution, research on solving urban problems using ICT technology is emerging. Representatively, research is being conducted mainly focusing on smart cities. 3D geo-spatial. Various case studies on smart cities are being conducted to solve urban problems, and in order to effectively implement smart cities, it is implemented on the basis of a digital twin interconnecting physical and virtual environments. To implement a digital twin, the concept of space is essential, and spatial information that composes the real world is also essential. Therefore, in order to implement the digital twin, this study conducted a study on the construction and modeling of 3D geo-spatial information based on the national spatial information establishment regulations and the international standard CityGML for buildings, water facilities, and transportation facilities in Jeonju. In Jeonju, the research area, the LOD was defined, and the possibility of digital twin based on geo-spatial information was determined through data collection, analysis, and construction for each detail. In this study, it is meaningful that a plan to construct geo-spatial information for the implementation of a digital twin is presented, and the result of the construction is modeled as an urban standard model. The results of study are expected to be used as reference for detailed construction plans and standard establishment by governments and local governments promoting smart city and digital twin construction in the future.