Finite element analysis of welding residual stress of aluminum plates under different butt joint parameters

Authors

  • Guofa Mi Henan Polytechnic University
  • Changyun Li Henan Polytechnic University
  • Zeng Gao Henan Polytechnic University
  • Dawei Zhao Henan Polytechnic University
  • Jitai Niu Henan Polytechnic University

Keywords:

heat source model, residual stress, finite element, thermal-elastoplastici

Abstract

A thermal-elastoplastici finite element method was built to simulate the process of variable polarity plasma arc welding (VPPAW) for aluminum alloy plates. The welding temperature and stress fields of the aluminum plates with different butt joint parameters(intervals of the joints: D=0.3 mm, 2 mm; and unfitness of the joints: L= 0.3 mm, 2 mm) were calculated using a 3D double-ellipsoidal heat source model. The residual stresses of the welded plates were predicted; the results showed that the unfitness of the joint has a greater impact on the welding residual stresses than that of the interval. The simulated and experimental results were compared and they are consistent well with each other.

Author Biographies

  • Guofa Mi, Henan Polytechnic University
    School of Materials Science and Engineering, Professor
  • Changyun Li, Henan Polytechnic University
    School of Materials Science and Engineering
  • Zeng Gao, Henan Polytechnic University
    School of Materials Science and Engineering
  • Dawei Zhao, Henan Polytechnic University
    School of Materials Science and Engineering
  • Jitai Niu, Henan Polytechnic University
    School of Materials Science and Engineering

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Published

2014-09-15

How to Cite

Finite element analysis of welding residual stress of aluminum plates under different butt joint parameters. (2014). Engineering Review, 34(3), 161-166. https://engineeringreview.org/index.php/ER/article/view/388

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