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RISS 인기검색어
- 검색키워드
- 저자 : 최주형(Joohyoung Choi) (검색결과 18 건)
- 무료
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최주형(Joohyoung Choi),전도형(dohyoung Jeon),조진래(Jinrae Cho),김기전(Gijeon Kim),우종식(Jongshik Woo) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper is concerned with the braking distance estimation of tire operated with ABS (Anti-lock Braking System). The frictional heat dissipation at disc pad is derived analytically, and the tire frictional energy loss is computed by utilizing the 3-D dynamic rolling analysis of tire. Dynamic rolling analysis during entire braking time period is impratical, so that this study divides the vehicle velocity by 10km/h to reduce the analysis time. The multiplication of the slip rate and the shear stress provides the frictional energy rate. Using frictional energy rate, total braking distance is estimated
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해양플랜트용 알루미늄 헬리데크의 구조 안전성 평가에 대한 연구, Part 2
조재상(JO JAESANG),최주형(CHOI JOOHYOUNG),유찬욱(RYU CHANUK),김정환(KIM JUNGHWAN) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
These days, the weight lightening is issued for cost decrease and safety of offshore. Helideck, the most important structure of offshore-plant topside, is considered important to weight lightening of topside. Previously, helideck is made by steel material but nowadays the aluminum is being used for manufacturing helideck. Although the material is changed, the software for structural analysis does not exist. Moreover, there is little experience about structural analysis. So, the Helideck has trouble in structural evaluation. In this paper, the structural analysis is performed for aluminum helideck. The study is carried out about the structural evaluation applying the variable loads based on regulation and using structural analysis program and own-development software.
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조재상(JO JAESANG),최주형(CHOI JOOHYOUNG),김정환(KIM JUNGHWAN) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
These days, the weight lightening is issued for cost decrease and safety of offshore. Helideck, the most important structure of offshore-plant topside, is considered important to weight lightening of topside. Previously, helideck is made by steel material but nowadays the aluminum is being used for manufacturing helideck. Although the material is changed, the software for structural analysis does not exist. Moreover, there is little experience about structural analysis. So, the Helideck has trouble in structural evaluation. In this paper, the structural analysis is performed for aluminum helideck. The study is carried out about the structural evaluation applying the variable loads based on regulation and using structural analysis program and own-development software.
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Offshore용 5 ton/day 다단 청수제조장치 설계 건전성 평가
유찬욱(Chanuk Ryu),최주형(Joohyoung Choi),김정환(Jeonghwan Kim),박말용(Malyong Park) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
During long-term stay in the offshore plant or ships’ sailors are need fresh water for living (ex. cleaning, boiler feed water, etc) therefor use a fresh water production apparatus from the sea water. The principle of operation is as follows. The sea water is injected to chamber and it boil for change to steam by engine cooling water (70 ~ 80 degrees Celsius) in vacuum environment. The vapor passed through filter for desalinate then it sent to condenser for change to pure water. It will reviewed for this apparatus design stability by thermal-structural coupled field analysis and modal analysis.
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BV-043에 따른 함정 기자재의 내충격 성능 평가에 관한 연구
성준호(Junho Seong),최주형(Joohyoung Choi),김정환(Jeonghwan Kim),백승호(Seungho Baek) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Special naval ship equipment should be designed to withstand shock loading caused by non-contact underwater explosion(UNDEX) by torpedoes or mines. To satisfy this requirement, an actual shock test is being performed as detailed in MIL-S-901 or structural analysis technique(BV-043[German Navy regulation], DDAM[USA] etc.) based on M&S is being used where the actual shock test is not applicable and the structures are supported by elastic mount. In this study, stress distribution is reviewed and evaluation of shock resistance characteristics of equipment for a naval ship is performed by using BV-043.
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조재상(JO JAESANG),최주형(CHOI JOOHYOUNG),김정환(KIM JUNGHWAN) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Helideck tiedown for offshore is installed for tieing the helicopter when the helicopter is landed on the helideck. In this paper, the analysis is performed to evaluate the safety of tie-down. First of all, the variable load cases are selected and the analysis is performed based on selected load cases when the tie down and wire connected.
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CFD를 이용한 FPSO용 de-oiling cyclone liner 형상 최적화에 대한 연구
유찬욱(Chanuk Ryu),최주형(Joohyoung Choi),김정환(Jeonghwan Kim),장호길(Hogil Jang),김정렬(Jeongryul Kim) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
Produced water will be created due to the influx of groundwater or seawater in the production process of crude oil in the FPSO. Before the discharge of produced water to remove the oil and gas through the separated device is essential. In generally for the separate to less than a allowable amount of Hydraulic cyclone applied to remove the oil before discharged. In this study, compared the results to verify the performance of the cyclone various shapes of derive the optimum shape of the oil separation in the cyclone, using the CFD.
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전산해석을 이용한 해양플랜트용 토크머신 구조 안정성평가 및 거동 시뮬레이션 연구
김지선(JISUN KIM),최주형(JOOHYOUNG CHOI),김정환(JEONGHWAN KIM),배재일(JAEIL BAE),정재욱(JAEWOOK JUNG) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Since the pipes used in drilling must not be separated during the drilling process, it should be strongly fastened with the large torque. The torque-machine is used for clamping and loosing pipes used in drilling. In this study, structure analysis is performed about principal components of torque machine, the pipe clamping process is established and the simulation model for clamping process is built through the rigid multi-body dynamics analysis.
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