Comparison of different local design concepts for the structural durability assessment of welded offshore K-nodes
Source abstract
Abstract
Abstract The structural durability design of complex welded structures should not rely only on one single design method but should apply different methods for assuring the reliability of the assessment. In this context the application of the structural stress (hot-spot), notch stress, notch strain and crack-propagation concepts are discussed through the example of K-nodes used in energetic offshore constructions like oil platforms or wind power plants, presenting the state of the art. While the hot-spot, notch stress and crack-propagation concepts show a good agreement between calculated and experimental results and do not differ significantly from each other, the notch strain concept fails significantly.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Hydrogen embrittlement and corrosion behaviors in metals · Structural Integrity and Reliability Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (15)
Show source-provided references
1. Light-weight design chances using high-strength steels10.1002/mawe.200600090 ↗
2. Umbach R, Sonsino CM, et al. Corrosion fatigue of welded tubular joints and cast-steel compound tubular joints in large size scale, report no. EUR 1431 DE, Brussels, European Coal and Steel Commission; 1993.
3. Prediction of service fatigue strength of a welded tubular joint on basis of local approaches10.1016/S0142-1123(98)00012-7 ↗
4. Sonsino CM, Vormwald M. Geschweißte Offshore – Rohrknoten (Anwendungsbeispiel). In: Bruchmechanischer Festigkeitsnachweis für Maschinenbauteile (FKM), Frankfurt; 2004, p. 81–4.
5. Radaj · 2006
6. Hobbacher A, editor. Recommendations for fatigue design of welded joints and components IIW doc. no. XIII-1823-07, update July 2008.
7. Rules for classification and construction offshore technology part 2: offshore installations structural design, section 3 G. Hamburg: Fatigue, Germanischer Lloyd; 1990.
8. A consideration of allowable equivalent stresses for fatigue design of welded joints according to the notch stress concept with the reference radii rref=1.00 and 0.05 mm10.1007/BF03266705 ↗
9. Sonsino CM, Fricke W, de Bruyne F, Hoppe A, Ahmadi A, Zhang G. Notch stress concepts for the fatigue assessment of welded joints – background and applications. Int J Fatigue, this issue.
10. Haibach · 2003
11. Fatigue testing under variable amplitude loading10.1016/j.ijfatigue.2006.10.011 ↗
12. Stress concentrations in tubular gap K-joints10.1016/S0141-0296(98)00062-5 ↗
13. Fricke W. Guideline for the fatigue assessment by notch stress analysis for welded structures, IIW-2240r1-08/XV-1289r1-08, Graz; 2008.
14. Zur Abschätzung der Wöhler-Linien von Schweißverbindungen
15. Zur Bewertung des Schwingfestigkeitsverhaltens von Bauteilen mit Hilfe örtlicher Beanspruchungen