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Publicações
Huang, W., Wang, T-J. Garbatov, Y. e Guedes Soares, C. (2012), “Fatigue reliability assessment of riveted lap joint of aircraft structures”, International Journal of Fatigue, Vol. 43, pp. 54-61
The objective of this work is to analyze the fatigue reliability of very complex ship welded structures composed of multiple stiffener-frame joints. A three-dimensional finite element model using 20-node solid elements is generated based on a commercial finite element code. A linear elastic finite element analysis is performed and hot-spot stresses in a stiffener-frame joint are analyzed 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 stiffener-frame joint is modeled as series system of correlated components using the Ditlevsen bounds. The fatigue reliability of the entire welded structure with multiple stiffener-frame joints, modeled as a parallel system of non-correlated stiffener-frame joints is also calculated.
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