DOI QR코드

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Lifting off simulation of an offshore supply vessel considering ocean environmental loads and lifting off velocity

  • Jeong, Dong-Hoon (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Roh, Myung-Il (Department of the Naval Architecture and Ocean Engineering, and Research Institute of Marine Systems Engineering, Seoul National University) ;
  • Ham, Seung-Ho (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • 투고 : 2015.07.08
  • 심사 : 2015.09.01
  • 발행 : 2015.09.25

초록

An OSV (Offshore Support Vessel) is being used to install a structure which is laid on its deck or an adjacent transport barge by lifting off the structure with its own crane, lifting in the air, crossing splash zone, deeply submerging, and lastly landing it. There are some major considerations during these operations. Especially, when lifting off the structure, if operating conditions such as ocean environmental loads and lifting off velocity are not suitable, the collision can be occurred due to the relative motion between the structure and the OSV or the transport barge. To solve this problem, this study performs the physics-based simulation of the lifting off step while the OSV installs the structure. The simulation includes the calculation of dynamic responses of the OSV and the structure, including the collision detection between the transport barge and the structure. To check the applicability of the physics-based simulation, it is applied to a problem of the lifting off step by varying the ocean environmental loads and the lifting off velocity. As a result, it is confirmed that the operability of the lifting off step are affected by the conditions.

키워드

참고문헌

  1. Boe, T. and Nestegard, A. (2010), "Dynamic forces during deepwater lifting operations", Proceedings of the 10th International Offshore and Polar Engineering Conference, Bejing, China, June
  2. Cha, J.H., Roh, M.I. and Lee, K.Y. (2010a), "Integrated simulation framework for the process planning of ships and offshore structures", Robot. Comput. -Integrated Manufacturing J., 26(5), 430-453. https://doi.org/10.1016/j.rcim.2010.01.001
  3. Cha, J.H., Roh, M.I. and Lee, K.Y. (2010b), "Dynamic response simulation of a heavy cargo suspended by a floating crane based on multibody system dynamics", Ocean Eng, 37(14-15), 1273-1291. https://doi.org/10.1016/j.oceaneng.2010.06.008
  4. Chris, H. (1997), Collision Response, Game Developer.
  5. Cummins, W.E. (1962), "The impulse response function and ship motions", Schiffstechnik, 9, 101-109.
  6. Ha, S., Ku, N.K., Roh, M.I. and Hwang, H.J. (2015), "Multibody system dynamics simulator for process simulation of ships and offshore plants in shipyards", Adv. Eng. Softw., 85, 12-25. https://doi.org/10.1016/j.advengsoft.2015.02.008
  7. Ku, N.K., Ha, S., Roh, M.I. and Lee, K.Y. (2013a), "Development of a kernel for dynamic analysis of various types of multi-crane in shipyard", Proceedings of the 13th International Society of Offshore and Polar Engineers Computer Graphics, Alaska, USA, June.
  8. Ku, N.K., Cha, J.H., Roh, M.I. and Lee, K.Y. (2013b), "A tagline proportional-derivative control method for the anti-swing motion of a heavy load suspended by a floating crane in waves", J. Eng. Maritime Environ., 227(4), 357-366.
  9. Ku, N.K. and Roh, M.I. (2014), "Dynamic response simulation of an offshore wind turbine suspended by a floating crane", accepted for publication in Ships and Offshore Structures, doi: 10.1080/17445302.2014.942504
  10. Masoud, Z.N. (2000), A control system for the reduction of cargo pendulation of ship-mounted cranes, Ph.D. Dissertation, Virginia Polytechnic Institute and State University, Blacksburg.
  11. Moore M. and Wilhelms J. (1988), "Collision detection and response for computer animation", Comput. Graphics, 22(4), 289-298.
  12. Nielsen, F.G. (2003), Lecture Notes in Marine Operations, Norwegian University of Science and Technology, Trondheim, Norway.
  13. Shabana, A. (1994), Computational Dynamics, John Wieley & Sons, Inc.
  14. Wu, M. (2013), Dynamic analysis of a subsea module during splash-zone transit, M.Sc. Dissertation, Norwegian University of Science and Technology, Trondheim.