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Thermal-Metallurgical-Mechanical Analysis of Weldment Based on the CFD Simulation

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Transactions on Intelligent Welding Manufacturing

Part of the book series: Transactions on Intelligent Welding Manufacturing ((TRINWM))

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Abstract

A new method of numerical thermal-metallurgical-mechanical analysis was introduced in this paper. The CFD welding simulation is based on the mass and heat transfer analysis solving mass, momentum, and energy conservation equations along with the Volume of Fluid (VOF) method. The VOF method is employed to track the shape of the free surface. The arc and droplet heat source model with electromagnetic force and arc pressure model were used for the arc welding process. Next, the temperature history of CFD welding simulation was transferred to the FEM domain for thermal-metallurgical-mechanical analysis with CFD-FEM framework. The diffusion kinetics considered phase transformation model successfully predicted phase fraction and residual stress distribution of carbon steel weldment. By using the combination of suggested T-M-Me analysis method and CFD welding analysis, it is possible to reproduce a phenomenon closer to reality. Also, the recent CFD-based process analyses and results that can be extended to multi-physical analysis were briefly introduced. However, considerable assumptions and simplified models are different from real welding phenomena. To solve this gap and to use welding simulation as a prediction tool rather than a reproduction, many young researchers will need to challenge.

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Acknowledgements

The authors gratefully acknowledge the support of the Brain Korea 21 plus program and Mid-career Researcher Program through NRF of Korea (2013R1A2A1A01015605).

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Authors and Affiliations

  1. Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea

    Jason Cheon & Suck-Joo Na

Authors
  1. Jason Cheon
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  2. Suck-Joo Na
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Correspondence to Suck-Joo Na .

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Editors and Affiliations

  1. Shanghai Jiao Tong University, Shanghai, China

    Shanben Chen

  2. Department of Electrical and Computer Engineering, University of Kentucky, Lexington, Kentucky, USA

    Yuming Zhang

  3. Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA

    Zhili Feng

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Cheon, J., Na, SJ. (2018). Thermal-Metallurgical-Mechanical Analysis of Weldment Based on the CFD Simulation. In: Chen, S., Zhang, Y., Feng, Z. (eds) Transactions on Intelligent Welding Manufacturing. Transactions on Intelligent Welding Manufacturing. Springer, Singapore. https://doi.org/10.1007/978-981-10-8330-3_1

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  • DOI: https://doi.org/10.1007/978-981-10-8330-3_1

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-8329-7

  • Online ISBN: 978-981-10-8330-3

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