Open AccessSelected Aspects of the FEM-Based Numerical Modelling of Current Propagation in the Resistance Multispot Cruciform Welding of Bars
Author(s) -
Mariusz Stępień,
Zygmunt Mikno
Publication year - 2021
Publication title -
biuletyn instytutu spawalnictwa w gliwicach/biuletyn instytutu spawalnictwa
Language(s) - English
Resource type - Journals
eISSN - 2300-1674
pISSN - 0867-583X
DOI - 10.17729/ebis.2021.4/1
Subject(s) - welding , finite element method , software , mechanical engineering , welding power supply , cruciform , electric resistance welding , computer science , arc welding , engineering , structural engineering , filler metal , programming language
The article presents selected aspects of the FEM-based analysis concerning resistance welding processes performed using multispot welding systems. The analysis was based on a three-spot welding machine used for the joining bars in the cruciform configuration. Both two and three-dimensional modelling was performed as the comparative analysis of two computing software packages, i.e. the commercial ANSYS Mechanical software package and the ARTAP software package, available on an open access basis. The research work involved the determination of current propagation in various welding process configurations as well as the identification of the percentage loss of welding current and power resulting from the bridging of current by neighbouring welds. The article discusses the effect of the method of the power supply and the earthing of the system of electrodes along with the welded material on the manner of current propagation. The analyses presented in the article were performed in relation to the DC power supply (inverter welding machine). Related calculations were performed using averaged (in terms of heat and resistance) material parameters.