Open AccessFinite element modeling of multiple electrode submerged arc welding of large diameter pipes
Author(s) -
Artem Khudyakov,
Yury Korobov,
Pavel Danilkin,
Владимир Дмитриевич Квашнин
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/681/1/012025
Subject(s) - welding , finite element method , mechanics , submerged arc welding , electrode , deposition (geology) , heat affected zone , ellipsoid , current (fluid) , materials science , mechanical engineering , structural engineering , metallurgy , engineering , thermodynamics , physics , geology , paleontology , quantum mechanics , astronomy , sediment
For the process of multiple-electrode submerged arc welding (MESAW) of large- diameter pipes (LDP) a mathematical model has been developed with a numerical solution in the software product “SYSWELD”. The paper defines the parameters of double ellipsoid model of heat sources by J. Goldak. Using regression analysis of experimental data empirical formulas for calculating geometrical parameters of heat sources model by J. Goldak and deposition rate were developed for welding with direct current on positive polarity and alternating current. The model allows to predict the shape of weld and to estimate analytically the cooling rate in the heat affected zone (HAZ). The developed model and its numerical solutions with sufficient accuracy for practical calculations reflect the process of longitudinal welding of LDP.