1. Comparison of residual strength-grounding damage index diagrams for tankers produced by the ALPS/HULL ISFEM and design formula method
- Author
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Do Kyun Kim, Jeom Kee Paik, Mohd Hairil Mohd, and Han Byul Kim
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Engineering ,Index (economics) ,Series (mathematics) ,business.industry ,Ground ,R-D diagram ,lcsh:Ocean engineering ,lcsh:Naval architecture. Shipbuilding. Marine engineering ,Ocean Engineering ,Structural engineering ,Residual ,Grounding damage ,Residual ultimate longitudinal strength ,Grounding damage index ,Double hull oil tankers ,Finite element method ,Residual strength ,Latin hypercube sampling ,lcsh:VM1-989 ,Control and Systems Engineering ,Hull ,lcsh:TC1501-1800 ,business - 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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