Journal ArticleDOI
Investigation on Temperature Distribution in SAW Weld Using 2D Mesh Model
TLDR
In this article, the authors studied the temperature distribution during the SAW welding with 2D heat flow mesh model and found that the shape of the weld is not formed by the time the heat source is terminated.Abstract:
Submerged arc welding is most widely used welding process in a variety of industries such as aerospace, shipbuilding, automotive, energy generating systems, satellites and etc., due to its advantages such as high quality, smooth, uniform finished weld with no spatter. During the welding process, it will impact on may mechanical attributes such as heat affected zone, stresses, distortions, change in microstructure and deformations. This paper focuses on study the temperature distribution during the SAW welding with 2D heat flow mesh model. In the analysis, it was observed that the heat source acts from 0.001s to 1.000s and the shape of the weld is not formed by the time the heat source is terminated. It also point out that the node situated close to the boundary of the weld on the top surface of the plate reaches its maximum temperature value at ~10s. The temperature in the similar node on the bottom of the plate passes its maximum at ~15 and can distinguish gradual temperature equalization.read more
Citations
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Journal ArticleDOI
Implementation of weave patterns by path parameterization in the simulation of welding processes by the finite element method
Heitor Abdias da Silva Pereira,Marcelo Cavalcanti Rodrigues,João Vitor Lira de Carvalho Firmino +2 more
TL;DR: Hu et al. as discussed by the authors used the path parameterization method to represent arc weaving in welding simulations as the coordinate transformation method, which can provide relevant information regarding the thermal cycle of weaving welding process and can be used for the adjustment of welding parameters and the prediction of welding defects.
References
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Journal ArticleDOI
A new finite element model for welding heat sources
TL;DR: In this article, a double ellipsoidal geometry is proposed to model both shallow penetration arc welding processes and the deeper penetration laser and electron beam processes, which can be easily changed to handle non-axisymmetric cases such as strip electrodes or dissimilar metal joining.
Journal Article
Temperature fields produced by traveling distributed heat sources
Thomas W. Eagar,N. S Tsai +1 more
TL;DR: The solution of a traveling distributed heat source on a semi-infinite plate provides information about both the size and the shape of arc weld pools as mentioned in this paper, and the results indicate that both welding process variables (current, arc length and travel speed) and material parameters (thermal diffusivity) have significant effects on weld shape.
Journal ArticleDOI
Heat Intensity and Current Density Distributions at the Anode of High Current, Inert Gas Arcs
TL;DR: In this article, heat and current distributions at the anode of high current arcs in inert gas atmospheres were determined experimentally, and the experimental method consisted of splitting anode, measuring the heat flux and the current to one of the sections as a function of arc position relative to the splitting plane, and calculating therefrom the distribution functions.