3차원 경계요소법과 전선 유한요소 해석의 연성을 통한 전선 유탄성 해석
Analysis on the Hydroelasticity of Whole Ship Structure by Coupling Three-dimensional BEM and FEM
2
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
This paper considers a fully coupled 3D BEM-FEM analysis for the ship structural hydroelasticity problem in waves. Fluid flows and structural responses are analyzed by using a 3D Rankine panel method and a 3D finite element method, respectively. The two methods are fully coupled in the time domain using a fixed-point iteration scheme, and a relaxation scheme is applied for improve convergence. In order to validate the developed method, numerical tests are carried out for a barge model. The computed natural frequency, motion responses, and time histories of stress are compared with the results of the beam-based hydroelasticity program, WISH-FLEX, which was thoroughly validated in previous studies. This study extends to a real-ship application, particularly the springing analysis for a 6500 TEU containership. Based on this study, it is found that the present method provides reliable solutions to the ship hydroelasticity problems.
Abstract
This paper considers a fully coupled 3D BEM-FEM analysis for the ship structural hydroelasticity problem in waves. Fluid flows and structural responses are analyzed by using a 3D Rankine panel method and a 3D finite element method, respectively. The two methods are fully coupled in the time domain using a fixed-point iteration scheme, and a relaxation scheme is applied for improve convergence. In order to validate the developed method, numerical tests are carried out for a barge model. The computed natural frequency, motion responses, and time histories of stress are compared with the results of the beam-based hydroelasticity program, WISH-FLEX, which was thoroughly validated in previous studies. This study extends to a real-ship application, particularly the springing analysis for a 6500 TEU containership. Based on this study, it is found that the present method provides reliable solutions to the ship hydroelasticity problems.
참고문헌 (21)
- Bathe, K. J., "Finite Element Procedures in Engineering Analysis" (1982), Prentice-Hall
- Bishop, R.E.D., "Hydroelasticity of Ships" (1979), Cambridge University Press
- Dawson, C. W., "A practical computer method for solving ship-wave problem", Proceeding of the 2nd International Conference on Numerical Ship Hydrodynamics, pp.30~38 (1977)
- Jensen, J.J., "Bending moments and shear forces in ships sailing in irregular waves", Journal of Ship Research, 24(4), pp.243~251 (1981)
- Kim, J.H., "Analysis of Ship Springing by using a Coupled Eigen-Value and BEM Approaches", Proceedings of the Annual Autumn Meeting SNAK, Mokpo, Republic of Korea (2011)
- WISH JIP Phase1, "Kim, K.H.", Seoul National University, ~ (2008)
- Kim, Y., "Comparative Study on Timedomain Analysis of Ship Motions and Structural Loads in Waves", International Society of Offshore and Polar Engineering Conference, Vancouver, pp.335~340 (2008)
- 김유일, "Time-domain analysis on hull-girder hydroelasticity by fully coupled BEM-FEM approach", 박사, pp.2009
- 김유일, "스프링잉 응답을 위한 유탄성 해석의 수치기법에 대한 연구", 대한조선학회 논문집, 46(3), pp.232~248 (2009), 대한조선학회
- Kim, Y.I., "Analysis of hydroelasticity of floating ship-like structure in time domain using a fully coupled hybrid BEM-FEM", Journal of Ship Research, 53(1), pp.31~47 (2009)
- Kim, Y.I., "Springing analysis of seagoing vessel using fully coupled BEM-FEM in the time domain", Ocean Engineering, 36(11), pp.785~796 (2009)
- 이호영, "파랑중 전진하는 선박의 유탄성 응답", 대한조선학회 논문집, 40(4), pp.3~21 (2003), 대한조선학회
- Lee, S.C., "A hydroelastic response analysis of barge type ships in regular waves", Korean Association of Ocean Science and Technology Societies Conference, pp.662~669 (2006)
- Malenica, S., "Some Aspects of 3D Linear HydroelasticModels of Springing", 8th International Conferenceon Hydrodynamics (2008)
- Nakos, D. E., "Ship Wave Patterns and Motions by a Three Dimensional Rankine Panel Method", 박사, pp.1990
- Oberhagemann, J., "Numerical and Experimental Investigations of Whipping and Springing of Ship Structures", 21th International Society of Offshore and Polar Engineering Conference (2011)
- A rational strip theory of ship motion : Part I, "Ogilvie, T.F.", University of Michigan, ~, pp.No 013. (1969)
- Song, M.J., "Numerical analysis and validation of weakly nonlinear ship motions and structural loads on a modern containership", Ocean Engineering, 38(1), pp.77~87 (2011)
- Timman, R., "The coupled damping coefficients of symmetric ships", Journal of Ship Research, 5(4), pp.34~55 (1962)
- Wu, M.K., "Linear and nonlinear hydroelastic analysis of high-speed vessel", Journal of Ship Research, 40(2), pp.149~63 (1996)
- Xia, J.Z., "Non-linear wave loads and ship responses by a time-domain strip theory", Marine Structures, 11(3), pp.101~123 (1998)