Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Analysis on the Hydroelasticity of Whole Ship Structure by Coupling Three-dimensional BEM and FEM

3차원 경계요소법과 전선 유한요소 해석의 연성을 통한 전선 유탄성 해석

  • Kim, Kyong-Hwan (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Bang, Je-Sung (Systems Engineering Research Division, Korea Institute of Machinery and Materials, Interdisciplinary Program in Computational Science and Technology, Seoul National University) ;
  • Kim, Yong-Hwan (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Kim, Seung-Jo (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 김경환 (서울대학교 조선해양공학과) ;
  • 방제성 (한국기계연구원 시스템엔지니어링연구본부, 서울대학교 협동과정 계산과학전공) ;
  • 김용환 (서울대학교 조선해양공학과) ;
  • 김승조 (서울대학교 기계항공공학부)
  • Received : 2011.11.14
  • Accepted : 2012.07.17
  • Published : 2012.08.20
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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.

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References

  1. Bathe, K.J., 1982. Finite Element Procedures in Engineering Analysis. Prentice-Hall.
  2. Bishop, R.E.D. & Price, W.G., 1979. Hydroelasticity of Ships. Cambridge University Press.
  3. Dawson, C.W., 1977. A practical computer method for solving ship-wave problem. Proceeding of the 2nd International Conference on Numerical Ship Hydrodynamics, CA, USA, pp.30-38.
  4. Jensen, J.J. & Pedersen, P.T., 1981. Bending moments and shear forces in ships sailing in irregular waves. Journal of Ship Research, 24(4), pp.243-251.
  5. Kim, J.H. Bang, J.S. Kim, Y. & Kim, S.J., 2011. Analysis of Ship Springing by using a Coupled Eigen-Value and BEM Approaches. Proceedings of the Annual Autumn Meeting SNAK, Mokpo, Republic of Korea, 3-4 November 2011.
  6. Kim, K.H. Kim, Y.I. & Kim, Y., 2008a. WISH JIP Phase 1, Seoul National University Report.
  7. Kim, Y. et al., 2008b. Comparative Study on Timedomain Analysis of Ship Motions and Structural Loads in Waves. International Society of Offshore and Polar Engineering Conference, Vancouver, Canada, 6-11 July 2008, pp.335-340.
  8. Kim, Y.I., 2009. Time-Domain Analysis on Hull-Girder Hydroelasticity by Fully Coupled BEM-FEM Approach. Ph.D. Seoul National University.
  9. Kim, Y.I. Kim, K.H. & Kim, Y., 2009a. A Study on the Numerical Methodologies of Hydroelasicity Analysis for Ship Springing Problem. Journal of the Society of Naval Architects of Korea, 46(3), pp.232-248. https://doi.org/10.3744/SNAK.2009.46.3.232
  10. Kim, Y.I. Kim, K.H. & Kim, Y., 2009b. 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.
  11. Kim, Y.I. Kim, K.H. & Kim, Y., 2009c. Springing analysis of seagoing vessel using fully coupled BEM-FEM in the time domain. Ocean Engineering, 36(11), pp. 785-796. https://doi.org/10.1016/j.oceaneng.2009.04.002
  12. Lee, H.Y. Lim, C.G. & Jung, H.B., 2003. Hydroelastic responses for a ship advancing in waves. Journal of the Society of Naval Architects of Korea, 40(4), pp. 16-21. https://doi.org/10.3744/SNAK.2003.40.4.016
  13. Lee, S.C. et al., 2006. A hydroelastic response analysis of barge type ships in regular waves. Korean Association of Ocean Science and Technology Societies Conference, Busan, Republic of Korea, 15-16 May 2006, pp.662-669.
  14. Malenica, S. Tuitman, J.T. Bigot, F. & Sireta, F.X., 2008. Some Aspects of 3D Linear Hydroelastic Models of Springing. 8th International Conference on Hydrodynamics, Nante, France.
  15. Nakos, D.E., 1990. Ship Wave Patterns and Motions by a Three Dimensional Rankine Panel Method. Ph.D. MIT.
  16. Oberhagemann, J. & Moctar, O., 2011. Numerical and Experimental Investigations of Whipping and Springing of Ship Structures. 21th International Society of Offshore and Polar Engineering Conference, Maui, USA, 19-24 June 2011.
  17. Ogilvie, T.F. & Tuck, E.O., 1969. A rational strip theory of ship motion : Part I. University of Michigan Report, No 013.
  18. Song, M.J. Kim, K.H. & Kim, Y., 2011. Numerical analysis and validation of weakly nonlinear ship motions and structural loads on a modern containership. Ocean Engineering, 38(1), pp.77-87. https://doi.org/10.1016/j.oceaneng.2010.09.017
  19. Timman, R. & Newman, J.N., 1962. The coupled damping coefficients of symmetric ships. Journal of Ship Research, 5(4), pp.34-55.
  20. Wu, M.K. & Moan, T., 1996. Linear and nonlinear hydroelastic analysis of high-speed vessel. Journal of Ship Research, 40(2), pp.149-63.
  21. Xia, J.Z. Wang, Z.H. & Jensen, J.J., 1998. Non-linear wave loads and ship responses by a time-domain strip theory. Marine Structures, 11(3), pp.101-123. https://doi.org/10.1016/S0951-8339(98)00008-2