Experimental and numerical analysis of the low-cycle fatigue behaviour of a web frame corner in ships
Experimental and numerical analysis of the low-cycle fatigue behaviour of a web frame corner in ships
- New search for: Crupi, V.
- New search for: Fricke, W.
- New search for: Friedrich, N.
- New search for: Guglielmino, E.
- New search for: Musumeci, L.
- New search for: Paetzold, H.
- New search for: Crupi, V.
- New search for: Fricke, W.
- New search for: Friedrich, N.
- New search for: Guglielmino, E.
- New search for: Musumeci, L.
- New search for: Paetzold, H.
Ship structures are generally subjected to cyclic loads which may result in fatigue failures particularly at welded joints. In addition to loads induced by waves and structural vibrations, which contribute to high-cycle fatigue, various structural details are also subjected to a limited number of high stress cycles caused by changing loading conditions, which may lead to low-cycle fatigue. Thus, appropriate procedures are required for the shipbuilding industry, which are missing in the existing design codes. Experimental investigations and numerical analyses were performed in this study to validate a procedure for the design of ship structures in low-cycle fatigue regime. Large scale fatigue tests were carried out with high bending moments on test models of web frame corners in order to produce fatigue cracks after few hundred cycles. The effective notch stress approach was applied to assess the low-cycle fatigue life of the critical cruciform joints, considering the elastic-plastic strain, evaluated by nonlinear finite element analyses, in the notch of the weld toe. The method offers promising possibilities to assess the fatigue life of welded joints in the low-cycle fatigue regime.
Document information
Experimental and numerical analysis of the low-cycle fatigue behaviour of a web frame corner in ships
Experimentelle und numerische Analyse des niederzyklischen Ermüdungsverhaltens von Rahmenecken in Schiffen
2013
6 Seiten, 9 Bilder, 1 Tabelle, 9 Quellen
Conference paper
English
Schiffbau , Rahmenelement , Ermüdungsverhalten , Schweißverbindung , zyklische Beanspruchung , Versagensart , Schwingungsverhalten , Ermüdung bei hohen Lastspielzahlen , Ermüdung bei niedrigen Lastspielzahlen , konstruktive Gestaltung , Konstruktionsdaten , numerische Analyse , Validierung , Kerbspannung , elastoplastische Bruchmechanik , Kreuzstoß , Ermüdungslebensdauer , Nahtübergang , Finite-Elemente-Analyse
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