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배성욱(Bae, Sung-Wook),홍진숙(Hong, Chin-Suk),정의봉(Jeong, Weui-Bong),박영수(Park, Young-Su),빈재구(Bin, Jae-Goo) 한국소음진동공학회 2010 한국소음진동공학회 논문집 Vol.20 No.12
Shock-resistance test for a real equipment for a normal vessel is one of the difficult problem in many cases because of terrible cost and weight. An analysis technique to evaluate the shock resistance in a design stage is necessary, instead In this paper, the process to evaluate the shock resistance of a propulsion motor for naval vessels was presented based on German navy's BV043 regulation. The shock signal to impose the equipment under the test was first evaluated, and was then applied to the structural FE model of the equipment. From the transient FEA, the time history of von-Mises stress was obtained by the mode superposition method. The shock resistance was evaluated using the peak value of the von-Mises stress.
김재부(Jae Boo Kim),박윤기(Yun Ki Park),박민석(Min Seok Park),이종환(Jong Hwan Lee),안성찬(Sung Chan An) 대한기계학회 2017 大韓機械學會論文集A Vol.41 No.10
본 연구에서는 수중폭발에 의한 가스터빈 패키지에 작용하는 충격하중을 평가하고, 충격하중에 대한 가스터빈 패키지의 내충격 안전성을 검토하였다. 이를 위해 먼저 BV043에 따른 시간이력 충격하중을 산출하고, 산출된 충격하중을 바탕으로 이상화된 WEM(Whole Engine Model, 전체시스템)에 대한 시간영역에서의 과도응답해석을 수행하였다. 이를 통해 가스터빈 패키지의 주요구성품에 전달되는 하중을 평가하였으며, 평가된 전달하중을 바탕으로 주요구성품의 상세모델에 대한 내충격 안전성 검토를 수행하였다. 검토결과 가스터빈 패키지는 기준응력 대비 최소 1.0 이상의 안전율을 가지는 것을 확인하였다. 그리고 실물테스트를 통해 가스터빈 패키지 엔진제어시스템(EMS : Engine Management System) 구조 및 제어기능의 내충격 건전성을 검증하였다. In this study, the shock resistance of a gas turbine package subjected to a shock load caused by non-contact underwater explosion was investigated using numerical analysis. To perform shock analysis, the time-history shock load was calculated according to BV-043 (German Navy Regulation). The direct transient response analysis in the time domain for the simplified Whole Engine Model (WEM) was performed using the calculated shock load. In addition, the structural integrity of a detailed model was evaluated by considering the shock load transferred to each component. As a result, it was confirmed that the safety factor was at least 1.0 as compared with the reference stress. Finally, the structural and functional integrity of the Engine Management System (EMS) of the gas turbine package was verified through an actual shock test.
하성록(Sung Rok Ha),조기대(Ki Dae Cho),강광희(Kwang Hee Kang),양성철(Sung Chul Yang),허기영(Gi Young Hur) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
A naval radar system mounted in ships is exposed to a variety of natural and man-made environments during its operational life. All of all of these events need to be considered in the design of the radar. Specially, a shock wave initiated by detonation of explosive device has a bad influence on life expectancy. Therefore the radar is required to survive in the shock and return to an operational state after the shock has occurred. In this paper, the shock response is analyzed by the dynamic design analysis method (DDAM) and design margin of the radar is evaluated from the results of DDAM.
TFT-LCD 모듈의 충격해석을 위한 해석변수 영향 고찰
김진곤(J. G. Kim),김정윤(J. Y. Kim),강상욱(S. W. Kang) 한국동력기계공학회 2009 한국동력기계공학회 학술대회 논문집 Vol.2009 No.11
TFT-LCD module with thin, small and layered structure makes its shock analysis very difficult and complicated. As TFT-LCD becomes more thinner, it is more difficult to assure its required shock resistance. Recently, the drop/impact simulation using the commercial explicit dynamic analysis software such as LS-DYNA3D is actively applied to assess the shock characteristics of TFT-LCD. In this study, the effects of analysis parameters in the drop/impact simulation are studied and the reliability of the present analysis results can be assured through the experimental verification.
조원용(Wonyong Cho),김은호(Eunho Kim),조철용(Chulyong Cho),이형호(Hyeongho Lee),오석형(Seokhyung Oh) 한국자동차공학회 2012 한국자동차공학회 지부 학술대회 논문집 Vol.2012 No.5-2
In this paper, it is developed the Mono-Tube type damper with improved performance and impact resistance. The damper has feature to pressed in protector of radiation fin type. To improve the radiation characteristic, optimum radiation fin is adopted through the fin type analysis and made the damper considered characteristic of radiation and manufacturing. Developed damper is investigated in durability, radiation performance and impact resistance. It" results are compared with exist damper characteristic.
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.
이재훈(Jae-Hoon Lee),배징도(Jing-Do Bae),최주형(Joo-Hyoung Choi),김정환(Jeong-Hwan Kim),공길영(Gil-Young Kong) 한국해군과학기술학회 2018 Journal of the KNST Vol.1 No.1
Unlike ordinary vessels, naval vessel should be designed and built considering the combat situation, and this applies equally to the equipment installed inside and outside the vessels. A method of designing and testing equipment to dampen shock waves transmitted to a ship or to withstand them by a noncontact underwater explosion has been studied by research institutes in the US and Europe. In this paper, various design criteria to evaluate the shock resistance of the equipment installed in the ship are introduced, and the application methods and limitations of each guidance are compared. And finally, the necessity and advantages of the CAE application in the shock resistance evaluation are described.