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Welding distortion prediction based on local displacement in the weld plastic zone

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Abstract

For a welding procedure with grooves or filler materials, to avoid underestimating the welding distortion in predictions based on the residual plastic strain, a prediction approach is proposed to estimate the welding distortion based on the local displacement in the weld plastic zone, and the proposed method is verified using the thermal elastic–plastic finite element method. Additionally, the welding distortions of an orthotropic deck are estimated using the proposed method and compared with the experimental measurements. The results show that the proposed method can be used to predict the welding distortion with a high accuracy, and in addition to the welding procedures with grooves or filler materials, the proposed method is also applicable to procedures without them.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Grant No. 51378430).

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Authors and Affiliations

  1. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, 621010, China

    Y. Gu

  2. School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China

    Y. D. Li, B. Qiang & D. D. Boko-haya

Authors
  1. Y. Gu
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  2. Y. D. Li
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  3. B. Qiang
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  4. D. D. Boko-haya
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Corresponding author

Correspondence to Y. D. Li.

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Recommended for publication by Commission X - Structural Performances of Welded Joints - Fracture Avoidance

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Gu, Y., Li, Y.D., Qiang, B. et al. Welding distortion prediction based on local displacement in the weld plastic zone. Weld World 61, 333–340 (2017). https://doi.org/10.1007/s40194-016-0418-5

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  • DOI: https://doi.org/10.1007/s40194-016-0418-5

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