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Verification of possibility for controlling welding distortion generated by laser-arc hybrid welding

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Abstract

For predicting welding distortion and residual stress generated by laser-arc hybrid welding (HYBW) with high accuracy by the 3D thermal elastic-plastic analysis based on FEM, a heat input model considering the dual heat source of HYBW was proposed. By using the proposed model, welding distortion and residual stress generated by HYBW on the general structural steel under several welding conditions, in which the heat input ratio of laser and arc were variously changed, were obtained. Comparing with the results obtained by experiments and analyses, the validity and generality of the proposed heat input model could be verified. The tendency and magnitude of welding distortion varied with the heat input ratio of laser and arc. The results indicated the possibility for controlling welding distortion generated by HYBW with the optimum heat input ratio of laser and arc.

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Refrerences

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Authors and Affiliations

  1. Osaka University, 2-5-6, Miyahara, Yodogawa, Osaka, 532-0003, Japan

    You-Chul Kim

  2. Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan

    Mikihito Hirohata

  3. IHI Corporation, 1, Shinnakahara-cho, Isogo-ku, Yokohama, 235-8501, Japan

    Koutarou Inose

Authors
  1. You-Chul Kim
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  2. Mikihito Hirohata
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  3. Koutarou Inose
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Corresponding author

Correspondence to You-Chul Kim.

Additional information

Joining and Welding Research Institute, Osaka University

Discussion open until November 1, 2014. This manuscript for this paper was submitted for review and possible publication on June 1, 2013; approved on March 5, 2014.

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Kim, YC., Hirohata, M. & Inose, K. Verification of possibility for controlling welding distortion generated by laser-arc hybrid welding. Int J Steel Struct 14, 323–329 (2014). https://doi.org/10.1007/s13296-014-2012-2

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  • DOI: https://doi.org/10.1007/s13296-014-2012-2

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