Publications

Feng, G.Q., Wang, D.S., Garbatov, Y. and Guedes Soares, C. (2015), “Reliability analysis based on a direct ship hull strength assessment”, J Marine Science and Applications, 2015, Vol. 14, pp. 389-398

A method in the reliability analysis based on a direct strength calculation employing the von-Misses stress failure criterion is presented here. The short term strain distributions of ship hull structural components are identified through the statistical analysis of the wave-induced strain history and the long term distributions by the weighted summation of the short term strain distributions. The wave-induced long term strain distribution is combined with the still water strain. The extreme strain distribution of the response strain is obtained by the sequential statistical analysis of the combined strains. The limit state function of the reliability analysis is based on the von Misses stress failure criterion, including the related uncertainties due to the quality of the material and model uncertainty. The reliability index is calculated using FORM and the sensitivity analysis of each variable that has effects on the reliability is also discussed.

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