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Publicações
Saad-Eldeen, S., Nguyen, T., Garbatov, Y. e Guedes Soares, C. (2010), “Fatigue Stress Assessment Accounting for Contact Effect”, Proceedings of the 10th International Conference on Marine Science and Technology, Union of Scientists of Varna, pp. 23-33
The objective of this study is to analyze the hot spot and notch stresses of two welded specimens subjected to fatigue load. The first specimen is a base plate strengthened by doubler plates and the second one is double lap joint. Three approaches for determining the stress distributions for fatigue analysis of welded structures are applied, the structural hot spot stress approach, the Xiao-Yamada approach and the effective notch stress approach. The influence of geometrical parameters of welded joints is studied. The gap between the double plate and the base plate is modelled as 0.1 [mm] void space with contact elements. Based on the results of the finite element models analyzed, polynomial regression equations assessing the stress concentration factors at the weld toe and weld root are derived.
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