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구현곤(Hyoun-kon Ku),김진우(Jin-woo Kim),이상식(Sang-sik Lee),송정일(Jung-il Song) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
The kelly bar structure of rotary drilling rig was designed and developed successfully. In this research, static analysis was performed by commercial software ANSYS 12.0. The real properties of material and working conditions were applied to simulate the working process of kelly bar structure. Investigate the performance of the design prototype product, structure safety at repeated load. Furthermore, more plans to develop the kelly bar structure were also proposed as a further study in this paper.
최적화 설계를 통한 혼합가스 성능시험용 고온 고압 용기의 제작
구현곤(Hyoun-Kon Ku),류형민(Hyung-Min Ryu),안재웅(Jae-Woong Ahn),배영관(Young-Gwan Bae),김진희(Jin-Hee Kim) 한국기계가공학회 2019 한국기계가공학회지 Vol.18 No.11
In this study, the high-temperature high-pressure vessel was successfully manufactured, which can be used to store pressurized air and to increase the temperature for the mix performance test of high-temperature high-pressure air with coolant (e.g., water). In this research, static structure analysis and transient thermal analysis were performed using the commercial software Midas NFX 2015 R1. Based on the results, the optimized pressure vessel design was carried out. As a result of the optimized design, the minimum stress and minimum weight were found at 120 ㎜ of the vessel thickness, and the optimized pressure vessel was verified. Finally, through manufacture and performance test (e.g., the non-destructive inspection and hydraulic pressure test), the reliability and safety were validated for the designed pressure vessel.
자유 낙하 윈치용 브레이크 디스크의 구조해석 및 최적설계
구현곤(Hyoun-Kon Ku),김진우(Jin-Woo Kim),원천(Cheon Won),송정일(Jung-Il Song) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.3
The structure of winch brake disk was successfully designed and developed based on sizing optimization. In this research, static analysis was performed by commercial software ANSYS v12.0. To simulate the working process of disk brake, the real properties of materials and working conditions were considered. Based on the results of the static structural analysis, the existing designs of the brake discs were optimized. Among existing designs, there are three cases that have achieved an efficient light weight around 200g. As a result, the optimized weight of each case was 3.41kg, 3.42kg, and 3.44kg, respectively. Finally, through prototyping and performance testing, the stability of the optimized brake disc was verified. Although, this free-fall winch brake disk had been developed in design and evaluation techniques, more detailed plans for developing the disk brake structure were also proposed as a further study based on this research.
구현곤(Hyoun-Kon Ku),배영관(Young-Gwan Bae),김진희(Jin-Hee Kim) 한국기계가공학회 2022 한국기계가공학회지 Vol.21 No.2
The test apparatus that can be protected from the high-temperature combustion flame and coolant injection was successfully manufactured. In this study, the coolant-injection module had a controllable consistent pressure, and the entire combustion module was protected using a nonflammable composite liner. Every flange was designed in accordance with the DIN standard, and the entire body of the module was designed in accordance with the EN 13445 code. Additionally, the hydraulic pressure test was performed in accordance with the 2014/68/EU directive and EN 13445 standard. Finally, after manufacturing, performance tests (such as pressure tests) were conducted to verify the reliability and safety.