Strength Assessment in View of Increasing the Productivity

In Joint Project:
WIPS – Competitiveness by Product Simulation Supported by Information Technology in Shipbuilding

Field of research:
Fatigue Strength

01.04.2000 – 30.09.2003

Project leader: 
Prof. Dr.-Ing. W. Fricke

Funded by:
BMBF, FKZ 03SX133B   

For cost reasons the production does not always adhere to the conventional production sequence. Objective of this investigation was the evaluation of three new structural details:

  • Part assembly by cogging of crossing webs,
  • Integrated bracket in hatch corner,
  • Lashing pots in RoRo-decks.

All three structural details show a tendency of root cracking and fatigue life cannot be determined in the design phase. For the first time a possible solution has been tried out on a bracket. The results show that this solution may be successful. However, further knowledge has to be gained with this solution.

  • S. Eylmann und H. Paetzold: Festigkeitsnachweise im Rahmen der Erhöhung der Produktivi-tät. Bericht 625, Schriftenreihe Schiffbau der TU Hamburg-Harburg 2004
  • Eylmann, S. und Paetzold, H. (2005): Betriebsfestigkeitsuntersuchungen an fertigungsgünstig gestalteten Strukturdetails. Jahrbuch der Schiffbautech. Ges. Bd. 99, S. 72 – 79.
  • W. Fricke and O. Doerk: Simplified approach to fatigue strength assessment of fillet-welded attachment ends. Int. J. of Fatigue 25 (2006), 141-150
  • W. Fricke: Assessment of weld root fatigue of fillet-welded structures based on local stresses. Int. J. Steel Structures 6 (2006), 299-306