2020
DOI: 10.1016/j.ijheatmasstransfer.2020.120310
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Visualizing the vibration effect on the tandem-pulsed gas metal arc welding in the presence of surface tension active elements

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Cited by 15 publications
(13 citation statements)
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“…Employing a temperature-dependent density model, thermal buoyancy forces are accounted for in the simulations. In the present work, the properties of the shielding gas are assumed to be temperature-independent, which is a common assumption in numerical simulations of arc welding and additive manufacturing where the melt-pool is decoupled from the arc plasma [ 7 , 8 , 9 , 11 , 12 , 13 , 22 ]. This assumption is justifiable as the transport properties of the shielding gas (i.e., viscosity, density and thermal conductivity) are small compared to those of the molten metal, and thus changes in the shielding gas properties with temperature negligibly affect the numerical predictions of fluid flow in the melt pool [ 24 ].…”
Section: Problem Descriptionmentioning
confidence: 99%
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“…Employing a temperature-dependent density model, thermal buoyancy forces are accounted for in the simulations. In the present work, the properties of the shielding gas are assumed to be temperature-independent, which is a common assumption in numerical simulations of arc welding and additive manufacturing where the melt-pool is decoupled from the arc plasma [ 7 , 8 , 9 , 11 , 12 , 13 , 22 ]. This assumption is justifiable as the transport properties of the shielding gas (i.e., viscosity, density and thermal conductivity) are small compared to those of the molten metal, and thus changes in the shielding gas properties with temperature negligibly affect the numerical predictions of fluid flow in the melt pool [ 24 ].…”
Section: Problem Descriptionmentioning
confidence: 99%
“…To date, focus has predominantly been placed on developing numerical simulations to describe melt-pool behaviour in arc welding of flat plates without a groove (i.e., bead-on-plate welding, see for instance, [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]); however little attention has been paid to understanding the effect of joint shape on complex heat and molten metal flow. Zhang et al [ 16 , 17 ] developed a three-dimensional model in a body-fitted coordinate system to describe the effects of various driving forces on heat and fluid flow in the melt pool during GMAW fillet welding.…”
Section: Introductionmentioning
confidence: 99%
“…They investigated the effective role of surface-active elements in controlling the internal melt ow. The effect of sulfur on creating both negative and positive surface tension gradients during welding was investigated by a comprehensive approach that led to more reliable simulation results [14]. Unlike the well-known ultrasonic frequencies found effective in many welding and joining applications [15][16][17][18], the process window of workpiece vibration and its variables are almost uncertain.…”
Section: Introductionmentioning
confidence: 99%
“…Tandem kaynağı, birçok araştırmacının ortaya koyduğu gibi, kaynak verimliliğini artırmaktadır [2], [3]. Çift telli kaynak, tek telli kaynağa göre daha yüksek yığma hızına ve üretim verimliliğine sahip olduğundan, ağır sanayide yaygın olarak kullanılmaktadır [4]. Çift telli kaynak prosesinde, yüksek kaynak hızı ve yığma hızı elde edilebilmektedir.…”
Section: Introductionunclassified