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Publicações
Huang, W., Garbatov, Y. e Guedes Soares, C. (2014), “Fatigue reliability assessment of correlated welded web-frame joints” , Journal of Marine Science and Application, Vol. 13, pp. 23-31
The objective of this work is to analyse the fatigue reliability of complex ship welded structures composed of multiple stiffener-frame joints. A three-dimensional finite element model using 20-node solid elements is generated. A linear elastic finite element analysis is performed, hot-spot stresses in a stiffener-frame joint are analysed and fatigue damage is quantified employing S-N approach. The statistical descriptors of fatigue life of a non-correlated stiffener-frame joint containing several critical hot-spots are estimated. The fatigue reliability of a stiffener-frame joint is modelled as a series system of correlated components using the Ditlevsen bounds. The fatigue reliability of the entire welded structure with multiple stiffener-frame joints, modelled as a parallel system of non-correlated stiffener-frame joints is also calculated.
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