| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Calcada, R.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2022Efficient progressive global-local fatigue assessment methodology for existing metallic railway bridgescitations
- 2020Fatigue crack growth modelling of Fao Bridge puddle iron under variable amplitude loadingcitations
- 2019Global-local fatigue assessment of an ancient riveted metallic bridge based on submodelling of the critical detailcitations
- 2019Influence of fillet end geometry on fatigue behaviour of welded jointscitations
- 2019Influence of loading direction on the static and fatigue fracture properties of the long term operated metallic materialscitations
- 2018Computational framework for multiaxial fatigue life prediction of compressor discs considering notch effectscitations
- 2018Development of an efficient approach for fatigue crack initiation and propagation analysis of bridge critical details using the modal superposition techniquecitations
- 2018Evaluation of fatigue crack propagation considering the modal superposition technique
- 2017Statistical analysis of fatigue crack propagation data of materials from ancient portuguese metallic bridgescitations
- 2016Application of modal superposition technique in the fatigue analysis using local approachescitations
- 2015An efficient methodology for fatigue damage assessment of bridge details using modal superposition of stress intensity factorscitations
- 2013Fatigue Crack Propagation Behavior of The Welded Steel of a Railway Bridgecitations
- 2013Fatigue analysis of box-girder webs subjected to in-plane shear and transverse bending induced by railway trafficcitations
- 2012Fatigue crack propagation behaviour in thick steel weldmentscitations
- 2012Fatigue assessment of a bowstring railway bridge
- 2009A comparative analysis of ballasted vs. slab track vibrations as a cause of rolling noise
- 2006Fatigue on metallic railway bridges: Methodology of analysis and application to Alcácer do Sal Bridge
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article
Influence of fillet end geometry on fatigue behaviour of welded joints
Abstract
This paper presents a fatigue analysis of a type of fillet welded joint representative of one main joint of the steel box girder of the Alcacer do Sal railway bridge. From previous studies, it was found that the welded joint between the box girder diagonal and the central hanger gusset is one of the most stressed details of the bridge. This welded joint was not fully manufactured according to current construction procedures, as regards the fillet weld end configuration. In order to assess the fatigue behaviour of such welded joint, the present study combines an experimental campaign and numerical analysis. A total of four welded joint series were produced in order to allow the comparison of the fatigue performance of similar type of welded joint of the Alcacer do Sal bridge with welded joints produced according to existing recommendations, such as EC3. Since scale-down specimens were considered, two different thicknesses were included in this study for each joint configuration, to allow the verification of any thickness effect. Concerning the numerical analyses, two main numerical tools were used: the standard Finite Element Method (FEM) with ANSYS and the eXtended Finite Element Method (XFEM) with ABAQUS. Fatigue life predictions were performed including both fatigue crack initiation and fatigue crack propagation phases. The number of cycles to initiate a fatigue crack was computed using local notch strain-life approaches, and the number of cycles for fatigue crack propagation was computed by integrating the Paris fatigue crack growth law with stress intensity factors computed with ANSYS (virtual crack closure technique) and ABAQUS (contour integral method, 3D XFEM model). Experimental tests demonstrated little influence of fillet weld end geometry on fatigue behaviour of welded joints and plate thickness effects were also reduced as also confirmed by the similar fatigue crack propagation rates. Both numerical simulations provided very accurate predictions of the experimental S-N curves, however the XFEM modelling opens new possibilities for mix mode fatigue crack propagation simulations.