Abstract
At first, general principles of the fatigue assessment approach using S-N curves are outlined, including the formula describing the design fatigue life in relation to the structural hot-spot stress range and the modification in the high-cycle regime to consider damaging effects under variable amplitude loading. Also the detrimental plate thickness effect may require a modification of the S-N curve. Further hints are given regarding the effects of misalignments. Afterwards, the two design S-N curves recommended for the conventional structural hot-spot stress approach are defined, one applicable to butt and non-load carrying fillet welds and the other to load carrying fillet welds. Finally, the S-N curves used in the other structural stress approaches are described, whereby a special structural stress parameter is needed in Dong’s approach.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Hobbacher, A.F.: Recommendations for Fatigue design of welded joints and components, 2nd edn, Springer (2016)
Dong, P.: A Structural stress definition and numerical implementation for fatigue analysis of welded joints. Intl. J Fatigue 23, 865–876 (2001)
Xiao, Z.G., Yamada, K.: A method of determining geometric stress for fatigue strength evaluation of steel welded joints. Int. J. Fatigue 26, 1277–1293 (2004)
Haibach, E.: Die Schwingfestigkeit von Schweissverbindungen aus der Sicht einer örtlichen Beanspruchungsmessung (The fatigue strength of welded joints considered on the basis of a local stress measurement), LBF-Bericht FB-77. Fraunhofer-Inst. für Betriebsfestigkeit, Darmstadt (1986)
Fricke, W.: IIW guideline for the assessment of weld root fatigue. Welding in the World 57, 753–791 (2013)
Partanen, T., Niemi, E.: Hot spot S-N curves based on fatigue tests of small MIG-welded aluminium specimens. IIS/IIW-1343-96 (ex. doc. XIII-1636-96/XV-921-96), Welding in the World, 43(1), 16–23 (1999)
Maddox, S.J.: Hot-spot stress design curves for fatigue assessment of welded structures, Intl. J Offshore and Polar Engng., 12, No. 2, June 2002, pp 134-141
Partanen, T., Niemi, E.: Collection of hot-spot S-N curves based on tests of small arc-welded steel specimens, IIW Doc XIII-1602-99 (1999)
Maddox, S.J.: Hot-spot fatigue data for welded steel and aluminium as a basis for design, IIW Document No. XIII-1900a-01 (2001)
Tveiten, B.W.: Fatigue assessment of welded aluminium ship details. Doctoral thesis, Department of Marine Structures, Norwegian University of Science and Technology, Trondheim (1999)
Zhao, X.-L., Packer, J.A.: Fatigue design procedure for welded hollow section joints, Recommendations of IIW Sub-commission XV-E. Woodhead Publishing, Cambridge (2000)
Dong, P., et al.: The master S-N curve method: an implementation for fatigue evaluation of welded components in the 2007 ASME B&PV Code, Section VIII, Division 2 and API 579-1/ASME FFS-1, WRC Bulletin, No. 523, New York, 2010
Dong, P., Hong, J.K., Cao, Z.: Stresses and stress intensities at notches: ‘anomalous crack growth’ revisited. Int. J. of Fatigue 25, 811–825 (2003)
Radaj, D., Sonsino, CM., Fricke, W.: Fatigue assessment of welded joints by local approaches, 2nd edn. Woodhead Publ., Cambridge (2006)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this chapter
Cite this chapter
Niemi, E., Fricke, W., Maddox, S.J. (2018). Structural Hot-Spot S-N Curves. In: Structural Hot-Spot Stress Approach to Fatigue Analysis of Welded Components . IIW Collection. Springer, Singapore. https://doi.org/10.1007/978-981-10-5568-3_6
Download citation
DOI: https://doi.org/10.1007/978-981-10-5568-3_6
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-5567-6
Online ISBN: 978-981-10-5568-3
eBook Packages: EngineeringEngineering (R0)