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감육이 존재하고 내압과 굽힘하중을 받는 T 분기관의 한계하중 해석
류강묵(Kang-Mook Ryu),김윤재(Yun-Jae Kim),이국희(Kuk-Hee Lee),박치용(Chi-Yong Park),이성호(Sung-Ho Lee),김태룡(Tae-Ryong Kim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
The present work presents plastic limit load solutions for piping branch junctions with local wall-thinning, based on detailed three-dimensional (3-D) and small strain FE limit analyses using elastic-perfectly plastic materials. Three types of loading are considered; internal pressure, in-plane bending on the branch pipe and in-plane bending on the run pipe. The wall-tinning located on variable area of the piping branch junction is considered. A wide range of piping branch junction and wall-thinning geometries are considered. Comparison of the proposed solutions with FE results shows good agreement.
감육이 존재하고 내압을 받는 T 분기관의 한계하중 평가식
류강묵(Kang-Mook Ryu),김윤재(Yun-Jae Kim),이국희(Kuk-Hee Lee),박치용(Chi-Yong Park),이성호(Sung-Ho Lee),김태룡(Tae-Ryong Kim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
The present work presents plastic limit load solutions for piping branch junctions with local wall-thinning, based on detailed three-dimensional (3-D) and small strain FE limit analyses using elastic-perfectly plastic materials. Three types of loading are considered; internal pressure, in-plane bending on the branch pipe and in-plane bending on the run pipe. The wall-tinning located on variable area of the piping branch junction is considered. A wide range of piping branch junction and wall-thinning geometries are considered. Comparison of the proposed solutions with FE results shows good agreement.
류강묵(Kang-Mook Ryu),김대우(Dae-Woo Kim),이진우(Jin-Woo Lee),방환철(Hwan-Cheol Bang),박철규(Chul-Gyu Park),정홍철(Hongchul Jeong) 대한용접·접합학회 2017 대한용접·접합학회지 Vol.35 No.6
Tensile strength, 485~550MPa grade of Quenching & Tempering or Normalizing heat-treated SA-537/A537 steels has been widely used as a steel for storage tanks. Since these steels have high crack sensitivity due to the relative high carbon equivalent, low heat input welding processes such as SMAW, GMAW or FCAW are commonly used for fabrication of storage tank. In this study, we have developed thermo-mechanical control process-type SA-841/A841 steels guaranteeing 1-pass high heat input EGW to increase welding productivity as well as superior quality of welded joints to normal low heat input welding processes. Besides, alloy design in base metal and TMCP process have been also optimized to obtain proper impact toughens in HAZ. As a result, excellent impact toughness at low temperature has been obtained in coarse grain HAZ (CGHAZ) under 340kJ/cm of heat input condition in 40mm thickness plates. Besides, more than 100J of absorbed energy at -10℃ have been achieved by optimizing welding consumables for A841 with high input welding.
선급용 고강도 극후물재의 취성파괴 정지 성능에 관한 연구
안규백,류강묵,박준식,정보영,김태수,이종섭,An, Gyu-Baek,Ryu, Kang-Mook,Park, Joon-Sik,Jeong, Bo-Young,Kim, Tae-Su,Lee, Jong-Sub 대한용접접합학회 2010 대한용접·접합학회지 Vol.28 No.1
In recent time there is vigorous requirement for the use of thick steel plate in various industrial fields including shipbuilding industry. Especially, with the continual increases in marine transportation volumes on a global scale, the steel of container ships has become thicker and thicker with the increased size of ships. In addition, the brittle crack arrestability of heavy thick plates was big issue, in recently. In this study, crack arrest test were conducted in order to investigate the crack arrestability of thick plates for shipbuilding steels, where test plate thicknesses were 50mm and 80mm. This paper introduces the brittle crack arrestability of heavy thick plates with thickness effect for shipbuilding.
3차원 면진장치를 이용한 URANUS 액체금속로의 지진응답감소
이국희,김윤재,류강묵,황일순,유봉,Lee, Kuk-Hee,Kim, Yun-Jae,Ryu, Kang-Mook,Hwang, Il Soon,Yoo, Bong 한국압력기기공학회 2011 한국압력기기공학회 논문집 Vol.7 No.3
URANUS (Ubiquitous, Robust, Accident-forgiving, Non-proliferating, Ultra-lasting and Sustainer) has been developed with 35MWe (100MWth) operating without primary coolant pump, capitalizing on natural circulation capability of lead-bismuth eutectic (LBE) for long-life small and robust power units. To ensure the structural integrity, the large safety margin against Safe Shutdown Earthquake, 0.3g, and furthermore the cost effectiveness for URANUS, three-dimensional seismic base isolation design has been developed. The analytical model has been developed and seismic time history analyses have been carried out. The advantage for using three-dimensional seismic base isolation for URANUS has been discussed.