Recent incidents have shown that a typical ship structural detail, i.e. the intersection between side longitudinals and transverse web frames, shows still fatigue failures. After problems in several tankers in the past, large container ships are now also affected. As a consequence, further fatigue tests and numerical analyses were performed with larger components, considering constant-amplitude as well as variable-amplitude loading. As the loading is primarily wave-induced, the so-called straight-line spectrum was applied, using the WASH load sequence. The fatigue behaviour of the different test models was highly affected by welding-induced residual stresses, causing differences between the models. The numerical analyses included the determination of local stresses according to the structural hot-spot and the effective notch stress approach, allowing a reasonable fatigue assessment for complex ship structural details.
Fatigue investigation of a complex ship structural detail
2009
11 Seiten, 13 Bilder, 2 Tabellen, 13 Quellen
Conference paper
English
Improved Ship Detail Finite Element Stress Analysis
British Library Conference Proceedings | 1998
|Improved ship detail finite element stress analysis
Tema Archive | 1998
|An investigation of ship propeller fatigue
TIBKAT | 1981
|Efficient fatigue assessment of ship structural details
Taylor & Francis Verlag | 2020
|