Publications

Guedes Soares, C. and Teixeira, A. (2000), “Structural Reliability of Two Bulk Carrier Designs", Marine Structures, Vol. 13, Issue 2, pp. 107-128

The paper aims at quantifying the changes in notional reliability levels that result from redesigning a traditional single hull bulk carrier to become a double hull structure. The probability of failure is calculated using a first order reliability method. The evaluation of the wave induced load effects that occur during long-term operation of the ship in the seaway is carried out. The still water loads are defined on the basis of a statistical analysis that accounts for the ship type. The ultimate collapse bending of the midship cross section is used as the basis for the reliability formulation. It is shown that by introducing the double hull in the bulk carriers their level of structural safety can be increased up to values typical of tankers. Additionally, the time dependent degrading effect of corrosion on the ultimate moment is also taken into account in the reliability assessment of bulk carriers.

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