International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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Comparison of residual strength-grounding damage index diagrams for tankers produced by the ALPS/HULL ISFEM and design formula method

  • Kim, Do Kyun (Lloyd's Register Foundation Research Centre of Excellence (The Ship and Offshore Research Institute), Pusan National University) ;
  • Kim, Han Byul (Lloyd's Register Foundation Research Centre of Excellence (The Ship and Offshore Research Institute), Pusan National University) ;
  • Mohd, Mohd Hairil (Lloyd's Register Foundation Research Centre of Excellence (The Ship and Offshore Research Institute), Pusan National University) ;
  • Paik, Jeom Kee (Lloyd's Register Foundation Research Centre of Excellence (The Ship and Offshore Research Institute), Pusan National University)
  • Published : 2013.03.31
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Abstract

This study compares the Residual ultimate longitudinal strength - grounding Damage index (R-D) diagrams produced by two analysis methods: the ALPS/HULL Intelligent Supersize Finite Element Method (ISFEM) and the design formula (modified Paik and Mansour) method - used to assess the safety of damaged ships. The comparison includes four types of double-hull oil tankers: Panamax, Aframax, Suezmax and VLCC. The R-D diagrams were calculated for a series of 50 grounding scenarios. The diagrams were efficiently sampled using the Latin Hypercube Sampling (LHS) technique and comprehensively analysed based on ship size. Finally, the two methods were compared by statistically analysing the differences between their grounding damage indices and ultimate longitudinal strength predictions. The findings provide a useful example of how to apply the ultimate longitudinal strength analysis method to grounded ships.

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References

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