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 W. Huang,Y. Garbatov and C. Guedes Soares.Fatigue Reliability Assessment of Correlated Welded Web-frame Joints[J].Journal of Marine Science and Application,2014,(1):23-31.[doi:10.1007/s11804-014-1228-z]
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Fatigue Reliability Assessment of Correlated Welded Web-frame Joints


Fatigue Reliability Assessment of Correlated Welded Web-frame Joints
W. Huang Y. Garbatov and C. Guedes Soares
W. Huang Y. Garbatov and C. Guedes Soares
Centre for Marine Technology and Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
fatigue reliability hotspot stress S-N approach finite element analysis web-frame joints
The objective of this work is to analyze the fatigue reliability of complex welded structures composed of multiple web-frame joints, accounting for correlation effects. A three-dimensional finite element model using the 20-node solid elements is generated. A linear elastic finite element analysis was performed, hotspot stresses in a web-frame joint were analyzed and fatigue damage was quantified employing the S-N approach. The statistical descriptors of the fatigue life of a non-correlated web-frame joint containing several critical hotspots were estimated. The fatigue reliability of a web-frame joint wasmodeled as a series system of correlated components using the Ditlevsen bounds. The fatigue reliability of the entire welded structure with multiple web-frame joints, modeled as a parallel system of non-correlated web-frame joints was also calculated.


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Last Update: 2014-11-04