Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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A Comparative Study of the Fatigue Strength on Cruciform Joints by Local Stress Methods

십자형 용접부 피로강도 산정을 위한 국부응력법의 비교연구

  • Yang, Park-Dal-Chi (School of Naval Architecture and Ocean Engineering, Ulsan University) ;
  • Ahn, Jung-Hyun (School of Naval Architecture and Ocean Engineering, Ulsan University)
  • Received : 2010.03.24
  • Accepted : 2010.05.25
  • Published : 2010.08.20
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Abstract

The notch effects on the fatigue strength of welded joints are both stress concentration and fatigue strength reduction. In the notch stress approach, the notch effects are usually approximated by introducing weld-bead parameters for the local detailed weld joints. In this paper, well-known notch stress approaches - critical distance method, area method and fictitious rounding method are presented for the fatigue strength of cruciform joints. The estimated results of the present methods are applied to the experiments performed in this study and reported in the references. The results of the application show that the fatigue-life scatterness of the experimental data expressed in the nominal stress is significantly reduced by introducing the effective fatigue stress of the present study.

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References

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  1. Estimation Fatigue Life of Weldments by Notch Stress Approaches vol.25, pp.5, 2011, https://doi.org/10.5574/KSOE.2011.25.5.047