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Stress Analysis and Fatigue of welded structures

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An Erratum to this article was published on 01 September 2011

Abstract

Fatigue analyses of weldments require detailed knowledge of the stress fields in critical regions. The stress information is subsequently used for finding high local stresses where fatigue cracks may initiate and for calculating stress intensity factors and fatigue crack growth. The method proposed enables the determination of the stress concentration and the stress distribution in the weld toe region using a special shell finite element modelling technique. The procedure consists of a set of rules concerning the development of the finite element mesh necessary to capture the bending and membrane structural stresses. The structural stress data obtained from the shell finite element analysis and relevant stress concentration factors are subsequently used to determine the peak stress and the non-linear through-thickness stress distributions. The peak stress at the weld toe is subsequently used for the determination of fatigue crack initiation life. The stress distribution and the weight function method are used for the determination of stress intensity factors and for the analysis of subsequent fatigue crack growth.

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Authors and Affiliations

  1. Faculty of Engineering, University of Waterloo, Waterloo, Ontario, Canada

    A. Chattopadhyay &  G. Glinka

  2. Aalto University, Helsinki, Finland

    G. Glinka

  3. Deere & Company World Headquarters, Moline, Illinois, United States

    M. El-Zein,  J. Qian &  R. Formas

Authors
  1. A. Chattopadhyay
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  2. G. Glinka
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  3. M. El-Zein
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  4. J. Qian
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  5. R. Formas
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Corresponding author

Correspondence to A. Chattopadhyay.

Additional information

An erratum to this article is available at http://dx.doi.org/10.1007/BF03321326.

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Chattopadhyay, A., Glinka, G., El-Zein, M. et al. Stress Analysis and Fatigue of welded structures. Weld World 55, 2–21 (2011). https://doi.org/10.1007/BF03321303

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