TY - JOUR
T1 - Numerical simulation of slag forming process during submerged arc welding using DEM-ISPH hybrid method
AU - Komen, Hisaya
AU - Shigeta, Masaya
AU - Tanaka, Manabu
AU - Nakatani, Mitsuyoshi
AU - Abe, Yohei
N1 - Publisher Copyright:
© 2018, International Institute of Welding.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - The hybrid method using a discrete element method (DEM) and an incompressible smoothed particle hydrodynamics (ISPH) method was developed to clarify the slag formation process during submerged arc welding. As a result, the weld pool formation and the slag formation processes were simulated simultaneously using the hybrid method. Moreover, the edge of the slag obtained by the simulation was thinner and the center of it was thicker, which were same tendency of actual slag. The maximum thickness of the slag near the weld line was equivalent to about 2.5 mm. Although the slag thickness obtained from the computation was a little thinner than the experiment, it supported the validity of this hybrid model. Thereafter, the ensemble average processing was carried out to discuss about the velocity field of a weld pool. The averaged result showed that velocity field of a weld pool was synchronized periodically with the transportation of a molten metal droplet.
AB - The hybrid method using a discrete element method (DEM) and an incompressible smoothed particle hydrodynamics (ISPH) method was developed to clarify the slag formation process during submerged arc welding. As a result, the weld pool formation and the slag formation processes were simulated simultaneously using the hybrid method. Moreover, the edge of the slag obtained by the simulation was thinner and the center of it was thicker, which were same tendency of actual slag. The maximum thickness of the slag near the weld line was equivalent to about 2.5 mm. Although the slag thickness obtained from the computation was a little thinner than the experiment, it supported the validity of this hybrid model. Thereafter, the ensemble average processing was carried out to discuss about the velocity field of a weld pool. The averaged result showed that velocity field of a weld pool was synchronized periodically with the transportation of a molten metal droplet.
KW - Discrete element method
KW - Flux
KW - Slag
KW - Smoothed particle hydrodynamics method
KW - Submerged arc welding
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U2 - 10.1007/s40194-018-0655-x
DO - 10.1007/s40194-018-0655-x
M3 - Article
AN - SCOPUS:85055740950
VL - 62
SP - 1323
EP - 1330
JO - Welding in the World, Le Soudage Dans Le Monde
JF - Welding in the World, Le Soudage Dans Le Monde
SN - 0043-2288
IS - 6
ER -