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Fatigue strength of tubular welded connections in offshore floating platforms

Auteur(s): (Dept. of Mechanical Engineering University of Thessaly Volos Greece)
(Dept. of Mechanical Engineering University of Thessaly Volos Greece)
(School of Naval Architecture & Marine Engineering National Technical University Athens Greece)
(Dept. of Mechanical Engineering University of Thessaly Volos Greece)
(Dept. of Civil Engineering University of Thessaly Volos Greece)
Médium: article de revue
Langue(s): anglais
Publié dans: ce/papers, , n. 3-4, v. 6
Page(s): 1163-1168
DOI: 10.1002/cepa.2683
Abstrait:

The work reported in the present paper is part of a European research program aimed at developing a hybrid tension‐leg floating platform, suitable for combined offshore wind and wave energy exploitation. Eight (8) fatigue tests on welded tubular joint specimens are performed, which represent the full penetration brace‐to‐cylindrical column welded connections of the project prototype structure. The large‐diameter columns are reinforced internally with a grid of longitudinal and transverse stiffeners fillet welded to the shell. The specimens are approximately 1/6‐scale physical models made of S355 grade steel, and subjected to cyclic loading under constant load amplitude histories. The brace‐to‐cylinder welds are semiautomatic, and high‐frequency mechanical impact treatment is applied in four specimens. The experiments are supported by post‐fracture metallographic examination and finite element analyses. The results indicate two locations for fatigue crack initiation: brace‐to‐cylinder crown and cylinder‐to‐stiffener connection.

Structurae ne peut pas vous offrir cette publication en texte intégral pour l'instant. Le texte intégral est accessible chez l'éditeur. DOI: 10.1002/cepa.2683.
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  • Reference-ID
    10766932
  • Publié(e) le:
    17.04.2024
  • Modifié(e) le:
    17.04.2024
 
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