A study on prediction of whipping effect of very large container ship considering multiple sea states
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In the design stage of the very large container ships, some methodologies for the whipping effects have been developed, but most of them are based on single sea state. We developed a methodology that considers multiple sea states. Fluid-structure Interaction (FSI) analyses with one dimensional structural model were carried out to capture slamming-induced transient whipping behaviors. Because of the nature of random phases of the applied wave spectra, the required period for entire FSI analyses was determined from the convergence study where the whipping effect became stable. Low pass filtering was applied to the transient whipping responses to obtain the hull girder bending moment processes. Peak counting method for the filtered whipping responses was used to obtain collection of the vertical bending moment peaks. The whipping effect from this new method is compared with that from based on single sea state approach. The efficiency and advantage of the new methodology are presented.
Abstract
In the design stage of the very large container ships, some methodologies for the whipping effects have been developed, but most of them are based on single sea state. We developed a methodology that considers multiple sea states. Fluid-structure Interaction (FSI) analyses with one dimensional structural model were carried out to capture slamming-induced transient whipping behaviors. Because of the nature of random phases of the applied wave spectra, the required period for entire FSI analyses was determined from the convergence study where the whipping effect became stable. Low pass filtering was applied to the transient whipping responses to obtain the hull girder bending moment processes. Peak counting method for the filtered whipping responses was used to obtain collection of the vertical bending moment peaks. The whipping effect from this new method is compared with that from based on single sea state approach. The efficiency and advantage of the new methodology are presented.
참고문헌 (24)
- Bishop, R. E. D., "A note on the dynamical behavior of uniform beams having open channel section", J. Sound Vib, 99(2), pp.155~167 (1985)
- Bureau Veritas, "Whipping and Springing Assessment Rule Note NR583 DT R00", ~ (2015)
- DNV GL, "Class Guideline-DNVGL-CG-0153 : Fatigue and Ultimate Strength Assessment of Container Ships Including Springing and Whipping", ~ (2015)
- Hino, M., "Spectrum Analysis" (2000), Sciencebook Press
- 임홍일, "Hydroelastic response of 19,000 TEU class ultra large container ship with novel mobile deckhouse for maximizing cargo capacity", International Journal of Naval Architecture and Ocean Engineering, 9(3), pp.339~349 (2017), 대한조선학회
- Khabakhpasheva, T. I., "Generalized wagner model of water impact by numerical conformal mapping", Appl. Ocean Res, 44, pp.28~50 (2014)
- WISH-FLEX : Development of Prediction Method for Ship Structural Hydro-Elasticity in Waves(springing and Slamming-Whipping), "Kim, Y. H.", Seoul National University, ~ (2011)
- Kim, J. H., "Numerical analysis on springing and whipping using fullycoupled FSI models", Ocean Eng, 91, pp.28~50 (2014)
- Kim, Y. I., "Analysis of hydroelasticity of floating ship-like structure in time domain using a fully coupled hybrid BEM-FEM", J. Ship Res, 53(1), pp.31~47 (2009)
- 김경환, "3차원 경계요소법과 전선 유한요소 해석의 연성을 통한 전선 유탄성 해석", 대한조선학회 논문집, 49(4), pp.312~326 (2012), 대한조선학회[DOI]
- 김범일, "대형 컨테이너 선박의 구조 응답에 미치는 휘핑영향도 분석", 대한조선학회 논문집, 55(4), pp.341~349 (2018), 대한조선학회[DOI]
- 김병훈, "대형 컨테이너 선박의 유탄성 실선 계측 데이터 분석 PartⅠ- 모달 파라미터 추정", 대한조선학회 논문집, 55(1), pp.37~44 (2018), 대한조선학회[DOI]
- Korean Register, "Guidance on Strength Assessment of Container Ships Considering the Whipping Effect", ~ (2017)
- Lloyds Register, "Global Design Loads of Container Ships and Other Ships Prone to Whipping and Springing", ~ (2018)
- 이호영, "파랑중 전진하는 선박의 유탄성 응답", 대한조선학회 논문집, 40(4), pp.3~21 (2003), 대한조선학회
- Malenica, S., "Some aspects of hydroelastic issue in the design of ultra large container ships", Proceedings of 22nd International Workshop on Water Waves and Floating Bodies, pp.133~136 (2007)
- Malenica, S., "Hydro structural issues in the design of ultra large container ships", Brodogradnja, 64(3), pp.323~347 (2013)
- Remy, F., "Experimental and numerical study of the wave response of a flexible barge", Proceedings of 4th International Conference on Hydroelasticity in Marine Technology, pp.255~264 (2006)
- Senjanovic, I., "An advanced theory of thin-walled girders with application to ship vibrations", Mar. Struct, 22, pp.387~437 (2009)
- Senjanovic, I., "Effective stiffness of the engine room structure in large container ships", Brodogradnja, 62(1), pp.15~27 (2011)
- Senjanovic, I., "Application of 1D FEM & 3D BEM hydroelastic model for stress concentration assessment in large container ships", Brodogradnja, 63(4), pp.307~317 (2012)
- Ivo Senjanović, "Global hydroelastic analysis of ultra large container ships by improved beam structural model", International Journal of Naval Architecture and Ocean Engineering, 6(4), pp.1041~1063 (2014), 대한조선학회
- Storhaug, S., "First ocean going ships with springing and whipping included in the ship design", Proceeding of the ASME 2011 30th International Conference on Ocean, Offshore and Artic Engineering (2011)
- Svein, E. H., "Full scale measurement of fatigue and extreme loading including whipping on an 8600TEU post Panama container vessel in the Asia to Europe trade", Proceeding of the ASME 2011 30th International Conference on Ocean, Offshore and Artic Engineering (2011)