TY - GEN
T1 - Modeling Heat and Mass Transfer and Fluid Flow in Three-Dimensional Gas Metal Arc Welding
AU - Wang, Y.
AU - Tsai, Hai-Lung
AU - Marin, S. P.
AU - Wang, P.-C.
PY - 2002/1/1
Y1 - 2002/1/1
N2 - This paper extends a mathematical model and numerical techniques previously developed for simulating stationary 2-D gas metal arc welding (GMAW), to moving 3-D GMAW. The filler droplets carrying mass, momentum, thermal energy, and species periodically impinge onto the weld pool, while moving at a certain speed in the welding direction. The complicated transport phenomena in the weld pool are caused by the combined effect of droplet impingement, gravity, electromagnetic force, plasma arc force, and surface tension force (Marangoni effect). The weld pool shape and the distributions of temperature, species, and velocity in the weld pool are calculated as functions of time. For the first time, the phenomena of "open and close-up" for a crater and the formation of ripples at the surface of a solidified weld bead are predicted by mathematical modeling. Under the welding conditions used in the present study, detailed mechanisms leading to the formation of ripples are discussed.
AB - This paper extends a mathematical model and numerical techniques previously developed for simulating stationary 2-D gas metal arc welding (GMAW), to moving 3-D GMAW. The filler droplets carrying mass, momentum, thermal energy, and species periodically impinge onto the weld pool, while moving at a certain speed in the welding direction. The complicated transport phenomena in the weld pool are caused by the combined effect of droplet impingement, gravity, electromagnetic force, plasma arc force, and surface tension force (Marangoni effect). The weld pool shape and the distributions of temperature, species, and velocity in the weld pool are calculated as functions of time. For the first time, the phenomena of "open and close-up" for a crater and the formation of ripples at the surface of a solidified weld bead are predicted by mathematical modeling. Under the welding conditions used in the present study, detailed mechanisms leading to the formation of ripples are discussed.
UR - https://www.scopus.com/pages/publications/78249270741
UR - https://www.scopus.com/inward/citedby.url?scp=78249270741&partnerID=8YFLogxK
U2 - 10.1115/IMECE2002-32335
DO - 10.1115/IMECE2002-32335
M3 - Conference contribution
SN - 079183641X
SN - 9780791836415
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings
SP - 385
EP - 400
BT - Modeling Heat and Mass Transfer and Fluid Flow in Three-Dimensional Gas Metal Arc Welding
PB - American Society of Mechanical Engineers (ASME)
T2 - 2002 ASME International Mechanical Engineering Congress and Exposition
Y2 - 17 November 2002 through 22 November 2002
ER -