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Simulations of weld pool dynamics in V-groove GTA and GMA welding

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Abstract

Introduction

Many simulation models use an axisymmetric arc model for heat flux, arc pressure, and electromagnetic force. In V-groove welding, however, an elliptically symmetric arc model is more acceptable than an axisymmetric model. An elliptically symmetric arc model can be established by applying the Abel inversion method to CCD images of welding arc on V-groove.

Methods

This study uses an elliptically symmetric arc model for CFD based simulations of fluid flow behavior in weld pool of GMA V-groove welding. It recommends a new method of calculating the electromagnetic force distribution in V-groove welding.

Conclusion

A volume of fluid method is used to describe the molten pool flow in numerical simulations.

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Acknowledgements

The authors gratefully acknowledge the support by Brain Korea 21 Project and POSCO in Republic of Korea.

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Authors and Affiliations

  1. Department of Mechanical Engineering, KAIST, Daejeon, Republic of Korea

    Dae-Won Cho & Suck-Joo Na

  2. Technical Research Laboratories, POSCO, Pohang, Republic of Korea

    Min-Hyun Cho & Jong-Sub Lee

Authors
  1. Dae-Won Cho
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  2. Suck-Joo Na
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  3. Min-Hyun Cho
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  4. Jong-Sub Lee
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Corresponding author

Correspondence to Suck-Joo Na.

Additional information

Doc. IIW-2312, recommended for publication by Commission XII “Arc Welding Processes and Production Systems”

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Cho, DW., Na, SJ., Cho, MH. et al. Simulations of weld pool dynamics in V-groove GTA and GMA welding. Weld World 57, 223–233 (2013). https://doi.org/10.1007/s40194-012-0017-z

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  • DOI: https://doi.org/10.1007/s40194-012-0017-z

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