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Prediction of Fatigue Life of Welded Structures

Received: 17 September 2016     Accepted: 13 October 2016     Published: 3 November 2016
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Abstract

This paper describes the fatigue life computation and comparisons of welded structures made up of high strength steels. Fatigue life of a T-joint two side fillet welded component is computed with four different methods. The methods used for investigation are nominal stress method, effective notch method, structural stress method and simple fracture mechanics method. To investigate the problem using structural stress and effective notch method, a fillet welded plate is modeled in ANSYS software and two-dimensional linear elastic analysis is performed. The fatigue lives obtained with these methods are reported and compared with the results obtained from nominal stress and simple fracture mechanics approach.

Published in American Journal of Mechanical and Industrial Engineering (Volume 1, Issue 3)
DOI 10.11648/j.ajmie.20160103.19
Page(s) 91-95
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2016. Published by Science Publishing Group

Keywords

Fatigue Life, Fillet Welded T-joint, Nominal Stress Method, Structural Stress Method, Effective Notch Method, Simple Elastic Fracture Mechanics

References
[1] R. Schliebner, M. Vormwald, “Fatigue of welded Hybrid Joints” Mat.-wiss u. Werkstofftech, 36, vol. 11, pp. 706-714, 2005.
[2] Petershagen H, Fricke W, Massel T. Application of the local approach to the fatigue strength assessment ofwelded structures in ships. IIW Doc. XIII-1409-91, International Institute of Welding, 1991.
[3] Radaj D. Design and analysis of fatigue-resistant welded structures. Cambridge: Abington Publ; 1990.
[4] Fricke W, Petershagen H. Detail design of welded ship structures based on hot spot stresses. In: Caldwell JB, Ward G, editors. Practical design of ships and mobile units. Amsterdam: Elsevier Science; 1992.
[5] E. Niemi, ‘‘Stress Determination for Fatigue Analysis of Welded Components’’, Abington Publishing, Cambridge, 1995.
[6] Huther I, Gorski S, Lieurade HP, Laborde S, Recho N. Longitudinal non loaded welded joints-geometrical stress approach. Welding in the World 1999; 43(3):20–6.
[7] Fricke W. Recommended hot spot analysis procedure for structural details of ships and FPSOs based on round-robin FE analyses. Int J Offshore Polar Eng 2002; 12(1):40–7.
[8] E. Neimi, ‘‘Structural stress approach to fatigue analysis of welded components’’, Document XIII-1819-00/XV-1090-01/XIII-WG-3-06-99. Cambridge England, International Institute of Welding, Abington Publishing, 2001.
[9] Hobbacher A., editor. Recommendations for fatigue design of welded joints and components. IIW-Doc. XIII-1965-03/XV-1127-03, International Institute of Welding, Final draft 2005.
[10] Dong P. A structural stress definition and numerical implementation for fatigue analyses. Int J Fatigue 2001;23(10):865–76.
[11] Dong P, Hong JK, Cao Z. Structural stress based master S–N curve for welded joints, IIW Doc XIII-1930-02/XV-1119-02, International Institute of Welding, 2002.
[12] Xiao Z-G, Yamada K. A method of determining geometric stress for fatigue strength evaluation of steel welded joints. Int J Fatigue 2004; 26:1277–93.
[13] Gary B. Marquis, E. Niemi, ‘‘Design of Plate Structures’’, @ 2005, Lappeenranta University of Technology- Finland.
[14] A. Hobbacher, Fatigue design of welded joints and components. IIW Doc. XIII-1539-96/XV-845-96 Abington Hall, UK,1996.
[15] A. F. Hobbacher, ‘‘The new IIW recommendations for fatigue assessment of welded joints and components- A comprehensive code recently updated’’, International journal of fatigue, 31 (2009) 50-58.
[16] E. Haibach, ‘‘Die Schwingfestigkeit von scheibverbindungen aus der sicht einer ortlichen Beanssprunchungsmessung’’, Fraunhofer- Institure fur Betriebsfestigkeit (LFB), Bericht Nr. FB-77/1968, Dramstdat.
[17] Norman E. Dowling, Mechanical Behavior of Materials, Engineering methods for deformation, fracture and fatigue, 3rd Edition.
[18] EuroCode 3, Design of Steel Structures, Finland SFS, SFS-ENV-1993-1-1.
[19] Teppei Okawa, Hiroshi Shimanuki, Tetsuro Nose, Tamaki Suzuki, Fatigue Life Prediction of Welded Structures Based on Crack Growth Analysis, Technical Report, Nippon Steel Technical Report No. 102, January 2013.
[20] Mustafa Aygül, Mohammad Al-Emrani, Shota Urushadze, Modeling and fatigue life assessment of orthotropic bridge deck details using FEM, International Journal of Fatigue, Volume 40, July 2012, Pages 129-142.
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  • APA Style

    Assad Anis. (2016). Prediction of Fatigue Life of Welded Structures. American Journal of Mechanical and Industrial Engineering, 1(3), 91-95. https://doi.org/10.11648/j.ajmie.20160103.19

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    ACS Style

    Assad Anis. Prediction of Fatigue Life of Welded Structures. Am. J. Mech. Ind. Eng. 2016, 1(3), 91-95. doi: 10.11648/j.ajmie.20160103.19

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    AMA Style

    Assad Anis. Prediction of Fatigue Life of Welded Structures. Am J Mech Ind Eng. 2016;1(3):91-95. doi: 10.11648/j.ajmie.20160103.19

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  • @article{10.11648/j.ajmie.20160103.19,
      author = {Assad Anis},
      title = {Prediction of Fatigue Life of Welded Structures},
      journal = {American Journal of Mechanical and Industrial Engineering},
      volume = {1},
      number = {3},
      pages = {91-95},
      doi = {10.11648/j.ajmie.20160103.19},
      url = {https://doi.org/10.11648/j.ajmie.20160103.19},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmie.20160103.19},
      abstract = {This paper describes the fatigue life computation and comparisons of welded structures made up of high strength steels. Fatigue life of a T-joint two side fillet welded component is computed with four different methods. The methods used for investigation are nominal stress method, effective notch method, structural stress method and simple fracture mechanics method. To investigate the problem using structural stress and effective notch method, a fillet welded plate is modeled in ANSYS software and two-dimensional linear elastic analysis is performed. The fatigue lives obtained with these methods are reported and compared with the results obtained from nominal stress and simple fracture mechanics approach.},
     year = {2016}
    }
    

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    T2  - American Journal of Mechanical and Industrial Engineering
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    JO  - American Journal of Mechanical and Industrial Engineering
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    AB  - This paper describes the fatigue life computation and comparisons of welded structures made up of high strength steels. Fatigue life of a T-joint two side fillet welded component is computed with four different methods. The methods used for investigation are nominal stress method, effective notch method, structural stress method and simple fracture mechanics method. To investigate the problem using structural stress and effective notch method, a fillet welded plate is modeled in ANSYS software and two-dimensional linear elastic analysis is performed. The fatigue lives obtained with these methods are reported and compared with the results obtained from nominal stress and simple fracture mechanics approach.
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Author Information
  • Deprtment of Automotive Engineering, NED University of Engineering & Technology, Karachi, Pakistan

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