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Rotation capacity of fillet weld joints made of high-strength steel

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Abstract

The capacity of the welded joint can be defined in terms of load-carrying and deformation capacities. For ultra-high-strength structural steels, such as S960 QC, the deformation capacity is a crucial structural property. In this paper, the rotation capacity of fillet weld joints was investigated experimentally and analytically. The rotation capacity of the fillet weld joints under pure bending load is calculated analytically by a model using the elastic peak stress and plastic limit state. The experimental test proved that the plastic load-carrying capacities required by the standards were reached. Additionally, the tests showed that sufficient deformation capacities can be obtained, although fully plastic rotation hinges could not always be reached. The experimental results were in good agreement with the analytically calculated capacities. However, there is a need for some design limitations before more results are available.

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Acknowledgments

The authors wish to thank Rautaruukki Corporation for supplying the materials and TEKES/FIMEC for providing the funding for this project, which is part of the LIGHT project.

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Authors and Affiliations

  1. Laboratory of Steel Structures, Lappeenranta University of Technology, P.O. Box 20, 53851, Lappeenranta, Finland

    T. Björk, T. Penttilä & T. Nykänen

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  1. T. Björk
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  2. T. Penttilä
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  3. T. Nykänen
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Corresponding author

Correspondence to T. Björk.

Additional information

Doc. IIW-2479, recommended for publication by Commission XV “Design, Analysis and Fabrication of Welded Structures”.

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Björk, T., Penttilä, T. & Nykänen, T. Rotation capacity of fillet weld joints made of high-strength steel. Weld World 58, 853–863 (2014). https://doi.org/10.1007/s40194-014-0164-5

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  • DOI: https://doi.org/10.1007/s40194-014-0164-5

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