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 Guoqing Feng,Dongsheng Wang,Yordan Garbatov,et al.Reliability Analysis Based on a Direct Ship Hull Strength Assessment[J].Journal of Marine Science and Application,2015,(4):389-398.[doi:10.1007/s11804-015-1328-4]
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Reliability Analysis Based on a Direct Ship Hull Strength Assessment


Reliability Analysis Based on a Direct Ship Hull Strength Assessment
Guoqing Feng1 Dongsheng Wang1 Yordan Garbatov2 C. Guedes Soares2
Guoqing Feng1 Dongsheng Wang1 Yordan Garbatov2 C. Guedes Soares2
1. School of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China;
2. Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
ship hullyield stressship structuresreliability analysisdirect calculationvon Mises stress failure criterion
A method of reliability analysis based on a direct strength calculation employing the von Mises 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 statistical analysis of the combined strains. The limit state function of the reliability analysis is based on the von Mises 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 sensitivity analysis of each variable that has effects on the reliability is also discussed.


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通讯作者:C. Guedes Soares, E-mail:c.guedes.soares@centec.tecnico.ulisboa.pt
Last Update: 2015-11-07