engleski

Ultimate strength check of HHI SkyBench™ ultra large container ship considering slamming and whipping effects

The trend in modern sea transportation is building of ever larger container ships, which require application of different direct calculation methodologies and numerical tools to achieve their reliable structural design. In this paper, the structural design of a HHI SkyBench™ 19000 TEU ultra large container vessel is evaluated within so called WhiSp2 methodology, which implies the ultimate strength check taking into account slamming induced whipping. Mathematical model is based on the application of the 3D potential flow model coupled with the 3D FEM structural model. The general hydro-structure code HOMER, developed in Bureau Veritas Classification Society is used. Linear long term analysis is performed to define most contributing sea states to the vertical bending moment (VBM). Whipping response is computed on so called increased design sea state (IDSS) in time domain and long term nonlinear extreme VBM value is determined. Ultimate bending capacity of hull girder is determined by means of MARS software, and ultimate strength check according to BV Rule Note NR583 is done, confirming ship compliance to the prescribed criteria.

Ultimate strength; ULCS; hydroelasticity; SkyBench™; WhiSp; bending moment; time domain simulation

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