http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
냉연재 권취공정의 메커니즘 규명 및 유한요소해석 모델 개발
박규태(K.T.Park),박용희(Y.H.Park),김경석(K.S.Kim),원성연(S.Y.Won),홍완기(W.K.Hong),천명식(M.S. Chun),박현철(H.C.Park) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
In the thin strip coiling process, it is necessary to use the sleeve with mandrel to prevent the excessive deformation of the strip. And stress distribution in the sleeve and strip is important factor to determine the size of sleeve. However, experimental approach is almost impossible because of accumulation of high pressure. In this study, the finite element model for the strip coiling process was developed. Also, the radial and hoop stress on the sleeve and strip were investigated. Theoretical values and analysis result in an idealized conditions were compared for verification of the finite element model. Using the FE analysis, effects of strip thickness on the stress distribution and stress concentration was investigated. The result shows the radial stress increased by 6.3 times near the coil starting point. The radial stress increased by 3.2㎫ compared to previous model with the stacked thickness of 90 mm that corresponds to weight of 2959 layers of 1 mm thickness strip.
이종혁(Lee J. H),마지훈(Ma J. H),유련(Yu L),이재걸(Lee J. G),원성연(Won S. Y),이석원(Lee S. W),김영근(Kim Y. G),길경석(Kil G. S) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
In recent years, the companies of electric power equipment for MV and HV classes trend to develop the eco-friendly insulated(solid, eco-gas, air etc.) switchgear which replaces existent SF. gas insulated switchgear due to environmental problems such as global warming and so on. This paper makes reference to the newly developed Solid Insulated Switchgear (SIS) which uses the eco-friendly material such as epoxy for insulation. The insulation of the solid insulated switchgear (SIS) is composed of an epoxy, vacuum and air. The solid insulated switchgear (SIS) is a state of the art product. The advantages of SIS are advanced reliability, economical efficiency, safety, maintenance free, reduction of installation area and the protection of environment. The solid insulated switchgear (SIS) is FE Analyzed such as electromagnetic, mechanical, thermal and fluid in order to find the optimal design. Thens SIS has been verified by international standard test. (IEC 62271 - 100 and so on.) As a result of this, the solid insulated switchgear (SIS) has been estimated as an alternative for eco-freinedly MV class switchgear.