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Efficient simulation of heterogeneous structures with the Finite Cell Method
ESM-50 – Fatigue strength of welded structures under sub-zero temperature
FasdHTS – High Tensile Steel 690 in Fast Ship Structures
FATice – Fatigue damage from dynamic ice action
Fatigue and fracture strength of block joints welded with large gaps
Fatigue behaviour of manually produced butt welds at thin plates considering common imperfections
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Simulation and experimental testing of the collision behaviour of ships with double hulls filled with particles
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Fatigue behaviour of manually produced butt welds at thin plates considering common imperfections
Field of Research:
Fatigue Strength
Duration:
01.09.2008 – 30.07.2010
PERSONS:
Dr.-Ing. H.Paetzold, Dipl.-Ing. O.Feltz
Partner:
Bundesamt für Wehrtechnik und Beschaffung, Blohm & Voss Nordseewerke, Fr. Lürssen Werft, Peene-Werft, Germanischer Lloyd, Technische Universität Hamburg-Harburg
BACKROUND:
Manually produced butt welds, as they often appear at block joints in shipbuilding, have distortions like angular and axial misalignment. Tolerances are defined in regulations like “Production Standard of German Shipbuilding Industry”, but for a plate thickness below 6 mm hard to fulfill.
This investigation is about manual weldings at block joints with a plate thickness of 4 mm. The test objects were produced under realistic conditions. The intention is proving sufficient fatigue behaviour of this detail.
Until now no damages have been reported at such structures. Nevertheless it is necessary to investigate the influence of misalignments at thin plates. It can be assumed that in future such structures will be increasingly used in shipbuilding. A validated background for dimensioning is essential and to be made available here.
FURTHER PUBLICATIONS:
- Eggert, L.; Fricke, W. und Paetzold, H.: Betriebsfestigkeit von Dünnblech-Montagestößen unter Berücksichtigung werftüblicher Imperfektionen. Jahrbuch der Schiffbautechnischen Gesellschaft, 105. Bd. (2011), Schifffahrts-Verlag „Hansa“ C. Schroeder & Co., Hamburg 2012.
- Eggert, L.; Fricke, W. und Paetzold, H.: Betriebsfestigkeit von Dünnblech-Montagestößen mit werftüblichen Imperfektionen im Schiffbau. In: Schweißen im Schiffbau und Ingenieurbau 2011, S. 32-38, DVS-Berichte Band 277, DVS Media, Düsseldorf 2011.
- Feltz, O. und Fricke, W.: Einflüsse zwischen Bauteil- und Kleinprobe auf die Betriebsfestigkeit von Dünnblech-Montagestößen im Schiffbau. In: Schweißen im Schiffbau und Ingenieurbau 2011, S. 39-46, DVS-Berichte Band 277, DVS Media, Düsseldorf 2011.
- Feltz O. und Fricke W.: 3-Dimensional Geometrical Effects on the Fatigue Strength of Manual Butt-Welds in Thin Plates, Proc. of IIW Int. Congress on Advances in Welding Science (Ed. M. Koçak), pp. 77-81, Technology AWST2011, Antalya 2011.
- Eggert, L.; Fricke, W.; Paetzold, H. (2012): Fatigue strength of thin-plated block joints with typical shipbuilding imperfections. Welding in the World 56, No. 11/12.
- Feltz, O.; Fricke, W. (2012): Consideration of influence factors between small-scale specimens and large components on the fatigue strength of thin-plated block joints in shipbuilding. IIW-Doc. XIII-2418-12, International Institute of Welding.
TU Hamburg
Institute for Ship Structural Design and Analysis (M-10)
Am Schwarzenberg Campus 4 C
21073 Hamburg
