Numerical simulation of a weld pool formation in a tig welding using an incompressible SPH method

Ito Masumi, Izawa Seiichiro, Fukunishi Yu, Shigeta Masaya

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

An incompressible SPH (Smoothed Particle Hydrodynamics) method was applied to numerical simulation of the thermofluid behavior of an anode metal in a TIG (Tungsten Inert Gas) welding process, taking account of the phase change of the anode material, free surface deformation of the liquid, and four dominant flow-driving forces, namely, gradient of surface tension (Marangoni effect), gas drag on the liquid surface, buoyancy, and electromagnetic force (Lorentz force). The present method successfully simulated that the direction of the temperature gradient of surface tension causes a significant difference of weld penetration. The penetration geometries of the present results agreed with those of actual welding processes. It is shown that the particle method used in this study is applicable to arc welding simulations.

Original languageEnglish
Pages (from-to)213-222
Number of pages10
JournalYosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
Volume32
Issue number4
DOIs
Publication statusPublished - 2014

Keywords

  • Arc weld pool
  • CFD
  • Marangoni convection
  • SPH
  • Surface tension
  • TIG welding

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Metals and Alloys

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