Analytical modeling of multipass welding process with distributed heat source

Abstract

In the welding process, the most interesting regions for heat transfer analysis are the fusion zone (FZ)

Modelling of Welding Processes – Applied Models and Examples

“…deep penetration and a slight penetration width, characteristic of key-hole welding. The precise geometrical form of heat distribution depends on a welding method and its parameters as well as on the thickness, temperature and physical properties of the material subjected to welding [2,13,14,15]. The Gaussian model is presented in Figure 5.…”

Modeling of Temperature Field during Multi-Pass GMAW Surfacing or Rebuilding of Steel Elements Taking into Account the Heat of the Deposit Metal

“…In the analytical solutions, the influence of phase transformation heat (both solid and liquid) is generally ignored, thermo-physical properties of the material are assumed to be independent of temperature, and only the conduction effect is taken into consideration (the radiation phenomenon and the gravity field are omitted), also Joule heat (for electric arc welding) is omitted [6][7][8][9][10][11][12][13][14][53][54][55][56][57][58]. Such assumptions were also adopted in this work.…”

“…Bo and Cho [6] derived an analytical solution for transient temperature field in finite thickness plate during single-pass arc welding, assuming Gaussian distribution of heat source. An analytical solution for temporary temperature field of fillet weld has been presented by Jeong and Cho [7] and wasapplied by Fassani and Trevisan [8] to compare the thermal cycles during multi-pass gas metal arc welding (GMAW) which was computed for Rosenthal's models of point heat sources and one-dimensional (1D) Gaussian. The solution is presented in the form of temperature distribution perpendicular to the welding direction.…”

Analytical model of stress field in submerged arc welding butt joint with thorough penetration

“…Such an approach is found in descriptions of temperature fields in welding processes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15], as well as in the machining processes [16][17][18][19]. In modelling of temperature field during welding dominate two approaches: analytical [1][2][3][4][5][6] and numerical [7][8][9][10][11][12][13][14][15].…”