Dynamic Response of Container Ship Subjected to Bow flare Slamming Loads

  • 투고 : 2018.10.10
  • 심사 : 2018.12.08
  • 발행 : 2018.12.31


The wave impact on ships could cause local damage to the ship's hull, which has been a concerning issue during the ship design process. In recent years, local structural damages of ships caused by slamming loads have been reported by accident; therefore, it is necessary to study the local slamming pressure loads and structural response assessment. In the present study, slamming loads around the ship's bow region in the presence of regular wave have been simulated by RANS equations discretized with a cell-centered finite volume method (FVM) in conjunction with the $k-{\Box}$ turbulence model. The dynamic structural response has been calculated using an explicit FE method. By adding the slamming pressure load of each time step to the finite element model, establishing the reasonable boundary conditions, and considering the material strain-rate effects, the dynamic response prediction of the bow flare structure has been achieved. The results and insights of this study will be helpful to design a container ship that is resistant enough to withstand bow flare slamming loads.


E1GPC1_2018_v4n4_195_f0001.png 이미지

Fig.1 Methods for slamming loads and structural strength assessment

E1GPC1_2018_v4n4_195_f0002.png 이미지

Fig.2 Procedure for nonlinear dynamic structural analysis under slamming loads

E1GPC1_2018_v4n4_195_f0003.png 이미지

Fig.3 Slamming load calculation conditions

E1GPC1_2018_v4n4_195_f0004.png 이미지

Fig.4 Grid systems for calculating slamming loads

E1GPC1_2018_v4n4_195_f0005.png 이미지

Fig. 5 The contour of surface pressure and wave elevation

E1GPC1_2018_v4n4_195_f0006.png 이미지

Fig.6 Illustration of CFD calculated pressure (left) and mapped pressure on structural model (right)

E1GPC1_2018_v4n4_195_f0007.png 이미지

Fig.7 FE model for bow flare slamming analysis

E1GPC1_2018_v4n4_195_f0008.png 이미지

Fig.8 Strain rate dependent material strength properties

E1GPC1_2018_v4n4_195_f0009.png 이미지

Fig.9 Stress distributions along the ship length, A

E1GPC1_2018_v4n4_195_f0010.png 이미지

Fig.10 Stress distributions along the ship length, B

E1GPC1_2018_v4n4_195_f0011.png 이미지

Fig.11 Plastic strain plot

Table 1. Material properties used in the target model

E1GPC1_2018_v4n4_195_t0001.png 이미지

Table 2. Types of loads applied in the structural analysis model

E1GPC1_2018_v4n4_195_t0002.png 이미지


  1. Abdussamie, N., Amin, W., Ojeda, R., Thomas, G. & Drobyshevski, Y., "Vertical Wave-in-Deck Loading and Pressure Distribution on Fixed Horizontal Decks of Offshore Platforms," Proceedings of the 24th International Offshore and Polar Engineering, Busan, Korea, 2014.
  2. Abdussamie, N., Ojeda, R., Amin, W., Thomas, G. & Drobyshevski, Y., "Prediction of Wave-in-Deck Loads on Offshore Structures Using CFD," The 19th Australasian Fluid Mechanics Conference, Melbourne, Australia, 2014.
  3. ABS Guideline, "Guideline for Slamming Loads and Strength Assessment for Vessels," March 2011(Updated July 2013).
  4. Bae, D., Hong, B., Moon, D., "Analysis on the Dynamic Response of the Hull Structure due to Slamming Impact - By Finite Element Method," Journal of the Korean Society of Fisheries and Ocean Technology, 19(2), pp. 117-124, 1983.
  5. Choi, M., Park, I., Koo, W., "Numerical Production of Slamming Impact Loads and Response on a Ship in Waves Considering Relative Vertical Velocity," Journal of the Korean Society of Naval Architects of Korea, 51(6), pp. 503-509, 2014.
  6. Choi, M., Park, I., Koo, W., "A Comparison Study on the Simplified Formulae for Ship Motion and Global Loads in Waves," Journal of the Korean Society of Naval Architects of Korea, 49(6) pp. 534-540, 2012.
  7. Hanbing, L., Jinjian, W., Shan, W., "Parallel Computing of Water Entry of a 2D Rigid Wedge Using an Explicit Finite Element Method," Journal of Ship Mechanics, 16(8), pp. 907-914, 2012.
  8. Hermundstad, O. A., Moan, T., "Numerical and Experimental Analysis of Bow Flare Slamming on a Ro-Ro Vessel in Regular Waves," Journal of Marine Science Technology, 10, pp. 105-122, 2005.
  9. IACS, "Common Structural Rules for Bulk Carriers and Oil Tankers," Part 1, Chapter 4, Section5, 2014.
  10. KR, "Rule for the Classification of Steel Ship," Part3, Hull Structures, 2017.
  11. Kwon, S., Yang, Y., & Lee, H., "Experimental and Numerical Study on Slamming Impact," Journal of Ocean Engineering and Technology, 27(1) pp. 1-8, 2013.
  12. LS-DYNA, "User Manual," Volume-I, R8.0, LSTC, 2016.
  13. Nahm J., Kang, H., Chung, J., Kwon, S., & Choi, H., "An Experimental Study on Slamming Phenomenon by Forced Impact," Journal of Ocean Engineering and Technology, 21(1) pp. 40-44, 2007.
  14. N-004, "NORSOK Standard," Rev 3. Feb. 2013.
  15. Ock, Y.B., "Numerical Simulations of Added Resistance around Ships in Regular Head Waves using Overset Grids," Master's thesis, Department of Naval Architecture and Ocean Engineering, Pusan National University, 2014.
  16. Park, J., Oh, S., Kwon, S., & Chung, J., "A Study on Slamming Impact Pressure," Journal of Ocean Engineering and Technology, 23(1) pp. 67-73, 2009.
  17. Schellin, T. E., Moctar, E. O., "Numerical Prediction of Impact-Related Wave Loads on Ships" International Conference on Offshore Mechanics and Artic Engineering, OMAE, 129(1), pp. 39-47, 2007.
  18. Veen, D. J., Gourlay, T. P., "A Combined Strip Theory and Smoothed Particle Hydrodynamics Approach for Estimating Slamming Loads on a Ship in Head Seas" Journal of Ocean Engineering, 43, pp. 64-71, 2012.
  19. Wang, H., "Slamming Load Determination in Local Structure Design of Ships" Shipbuilding of China, 51(2), pp. 69-76, 2010.
  20. Zhao, R., Faltinsen, OM., "Water Entry of Two-dimensional Bodies," Journal of Fluid Mechanics, 222, pp. 215-230, 1991.
  21. Zhao, R., Faltinsen, OM., Aarsnes, J., "Water Entry of Arbitrary Two-dimensional Sections with and without Flow Separation," Proceedings of Twenty-first Symposium on Naval Hydrodynamics, pp. 408-423, 1996.