DOI QR코드

DOI QR Code

Numerical Prediction of Slamming Impact Loads and Response on a Ship in Waves Considering Relative Vertical Velocity

상대수직속도를 고려한 파랑중 선박의 슬래밍 충격하중 및 응답 계산

  • Choi, Mun-Gwan (Hyundai Heavy Industries) ;
  • Park, In-Kyu (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Koo, WeonCheol (Department of Naval Architecture and Ocean Engineering, Inha University)
  • Received : 2014.08.09
  • Accepted : 2014.10.10
  • Published : 2014.12.20

Abstract

This paper describes the time-domain numerical method for prediction of slamming loads on a ship in waves using the strip theory. The slamming loads was calculated considering the relative vertical velocity between the instantaneous ship motion and wave elevation. For applying the slamming force on a ship section, the momentum slamming theory and the empirical formula-based bottom slamming force were used corresponding to the vertical location of wetted body surface. Using the developed method, the vertical bending moments, relative vertical velocities, and impact forces of S175 containership were compared in the time series for various section locations and wave conditions.

Keywords

References

  1. Choi, M.G. Park, I.K. & Koo, W.C., 2012. A Comparison Study on the Simplified Formulae for Ship Motion and Global Loads in Waves. Journal of the Society of Naval Architects of Korea, 49(6), pp.534-540. https://doi.org/10.3744/SNAK.2012.49.6.534
  2. Gerritsma, J. & Beukelman, W., 1964. The distribution of the hydrodynamic forces on a heaving and pitching ship model in still water. Fifth Symposium on Naval Hydrodynamics, Bergen, Norway, 10-12 September 1964, pp.219-251.
  3. Hwang, J.H. Park, I.K. & Koo, W.C., 2012. Numerical Analysis of Ship Motion and Wave Loads including Momentum Slamming. Journal of the Society of Naval Architects of Korea, 49, pp.109-115. https://doi.org/10.3744/SNAK.2012.49.2.109
  4. Kawakami, M. Michimoto, J. & Kobayashi, K., 1977. Prediction of Long Term Whipping Vibration Stress due to Slamming of Large Full Ships in Rough Seas. International Shipbuilding Progress, 24, pp.83-110.
  5. Kwon, S.H. Yang, Y.J. & Lee, H.S., 2013. Experimental and Numerical Study on Slamming Impact. Journal of Ocean Engineering and Technology, 27(1), pp.1-8. https://doi.org/10.5574/KSOE.2013.27.1.001
  6. Lee, T.K. Rim, C.W. Kim Y.N. Heo, J.H. & Kim, B.H., 2007. A Study on Measurement of Flare Slamming of Large Container Vessel (II) - Characteristic Analysis of Measured Slamming Pressure. Journal of the Society of Naval Architects of Korea, 44(3), pp.279-284. https://doi.org/10.3744/SNAK.2007.44.3.279
  7. Nahm, J.O. Kang, H.D. Chung, J.Y. Kwon, S.H. & Choi, H.S., 2007. An Experimental Study on Slamming Phenomenon by Forced Impact. Journal of Ocean Engineering and Technology, 21(1), pp.40-44.
  8. Ochi, M.K., 1967. Ship Slamming-hydrodynamic impact between waves and ship bottom forward. Symposium on Fluid-Solid Interaction, The American Society of Mechanical Engineers. Pittsburgh, PA, November, pp.58-65.
  9. Ochi, M.K. & Motter, L.E., 1973. Prediction of Slamming Characteristics and Hull Responses for Ship Design. The Society of Naval Architects and Marine Engineers Transportation, 81, pp.144-176.
  10. Park, J.S. Oh, S.H. Kwon, S.H. & Chung, J.Y., 2009. A Study on Slamming Impact Pressure. Journal of Ocean Engineering and Technology, 23(1), pp.67-73.
  11. Shin, H,K. Kim, S.C. & Cho, S.R., 2010. Experimental Investigations on Slamming Impact by Drop Tests. Journal of the Society of Naval Architects of Korea, 47, pp.410-420. https://doi.org/10.3744/SNAK.2010.47.3.410
  12. Stavovy, A.B. & Chuang, S.L., 1976. Analytic Determination of Slamming Pressure for High-Speed Vehicles in Waves. Journal Ship Research, 20(4), pp.190-198.
  13. Yamamoto, Y. Fujino, M. & Fukasawa, T., 1979. Motion and Longitudinal Strength of a Ship in Head Sea and the Effects of Non-linearities. Journal of the Society of Naval Architects of Japan, 143, 144 and 145, pp.63-70.