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논문 기본 정보

자료유형
학술저널
저자정보
Do-Soo Kwon (Korea Maritime & Ocean University) Quang Dao Vuong (Korea Maritime & Ocean University) Van Chien Pham (Korea Maritime & Ocean University) Antony John Nyongesa (Korea Maritime & Ocean University) Min-Ho Park (Korea Maritime & Ocean University) Kitae Park (Korea Institute of Maritime & Fisheries Technology) Won-Ju Lee (Korea Maritime & Ocean University)
저널정보
한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제45권 제5호
발행연도
2021.10
수록면
263 - 268 (6page)

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A hydraulic accumulator is a key component that absorbs the shock and vibrations of a hydraulic system of a marine diesel engine and controls the volume change according to the pressure change of the hydraulic oil. During the operation of a hydraulic accumulator, repeated concentrated stress is applied to the lowermost thread of the lower shell. The purpose of this study is to numerically investigate the structural safety and fatigue life for hydraulic accumulators under extreme pressure conditions. Structural and fatigue analysis were performed using finite element modeling under the operating conditions and test conditions of 30MPa and 40MPa pressure, respectively. As a result of the structural analysis, the maximum von Mises stress did not exceed the tensile strength under the operating conditions, whereas the von Mises stress of 1029 MPa under the test conditions exceeded the tensile strength: thus, the structural stability was not secured. The fatigue life was calculated using fatigue analysis with a design life of 10<SUP>6</SUP>. Further, fatigue failure occurred within a short duration as it represented 160 cycles.

목차

Abstract
1. Introduction
2. Finite Element Modeling
3. Analysis and Discussion
4. Conclusion
References

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