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제연해석 프로그램의 질량 및 엔탈피 보존식의 연계알고리즘 개선연구
배승용 ( Sung Ryong Bae ),고권현 ( Gwon Hyun Ko ),홍기배 ( Ki Bae Hong ),유홍선 ( Hong Sun Ryou ) 한국안전학회(구 한국산업안전학회) 2011 한국안전학회지 Vol.26 No.4
For decreasing of the casualties and designing of the smoke control systems in the ultra high-rise building, the programs for analysis of smoke control were developed for prediction of smoke spread and distributions of pressure and temperature in building fire situation. In this study, coupling algorithm between mass and enthalpy conservations was modified for improving the applicability of the CAU_ESCAP which program can consider the energy transfer. The fire situation in ultra high-rise building was applied by using the modified CAU_ESCAP. Results of pressure difference predicted by modified CAU_ESCAP are higher than results of ASCOS as stack effect is generated due to the increasing of stairway temperature. Moreover, theoretically, the result of the neutral plane is more accurate than the result of ASCOS, in fire situation of ultra high-rise building.
고강도 경량화 산업용 풀리 개발을 위한 이종접합 사출풀리 제작에 관한 연구
유관종(Kwan-jong You),배승용(Sung-ryong Bae),김재열(Jae-yeol Kim) 한국기계가공학회 2019 한국기계가공학회지 Vol.18 No.6
In the mold-manufacturing field, various methods of advanced production technology are being used in the production of industrial-grade gear pulleys. Among the current methods are injection molding, hoop molding, insight molding, two-material molding, compound-mold molding, as well as engineering plastic mold. Currently, casting pulleys are inexpensive because they are produced in small quantities. However, they produce complications during the manufacturing process, are very unreasonable for mass production, and are disadvantageous in cost competitiveness. Pulleys are divided into hundreds of kinds and thousands of kinds, so the production methods vary. As these pulleys are made of a single material by a casting and welding method, they are not manufactured using injection molds consisting of different materials. In this research, pulleys, shafts, and reinforced plastic materials were incorporated using ANSYS software, and a low-cost, lightweight technology was applied for trial production with optimum design and extrusion technology.