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각형강관을 이용한 슬림플로어 시스템의 층고절감효과 비교
조윤진 ( Cho Youn-jin ),임홍철 ( Rhim Hong-chul ),김대유 ( Kim Dae-you ),류승일 ( Yu Seung-il ),김도균 ( Kim Do-kyun ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
In recent years, new construction methods have been required to reduce the construction cost and increase the available area in an environment where construction work is frequently performed in a narrow urban area like Korea. As a result of these studies, slim floor composite beam has been suggested. Slim floor composite beam can reduce required depth because web of steel beam is embedded in the slab, so it is effective to reduce floor height and increase the available area. The purpose of this study is the floor height reduction evaluation by comparing system consisting of reinforced concrete, steel, and slim floor using square-shape steel pipe. After doing structural design for a typical plan, checked effectiveness by comparing each design plan. It is proven that slim floor composite beam can reduce required depth effectively comparing required materials of other system.
직립 기동 영구자석 동기전동기의 최적설계 및 동특성 해석
김도선(Do-Sun Kim),김병국(Byong-Kuk Kim),이병준(Byung-Jun Lee),조윤현(Youn-Hyun Cho) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.4
The interest in permanent magnet synchronous motor is present in a wide area of applications, ranging from high-performance servo drive to line-start application. The are mainly two reasons for this trend: first low rotor losses and second the falling prices of high-energy magnets. In this paper the dynamic characteristic of the line-start permanent magnet synchronous motor are described and compared with those if the squirrel-cage induction motor through the simulation to find the characteristics of the permanent magnets and the rotor bar in the line-start permanent magnet synchronous motor..