Automatic Welding, 2022, №07



2022 №07 (08)

DOI of Article 10.37434/as2022.07.01

2022 №07 (02)

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Avtomaticheskaya Svarka (Automatic Welding), #7, 2022, pp. 3-8

Calculation evaluation of stress-strained states of welded joints of aluminium AMg61 alloy under the action of electrodynamic treatment of weld metal in the process of fusion welding

L.M. Lobanov¹, M.O. Pashchyn¹, O.L. Mikhoduj¹, A.A. Hryniuk¹, E.V. Illyashenko¹, P.V. Goncharov¹, V.V. Savytsky¹, Yu.M. Sydorenko², P.R. Ustymenko²

¹NTUU «Kyiv Polytechnic Institute named after Igor Sikorsky». 03056, Kyiv, Peremohy Ave., 37. E-mail: mail@kpi.ua
²E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The calculation evaluation of effect of impact interaction of electrode-indenter with a welded plate of AMg61 alloy at its electrodynamic treatment (EDT) in the conditions of elevated temperatures was carried out. The solution of the problem was carried out in a flat two-dimensional Lagrangian statement based on a previously developed mathematical model using ANSYS/ LS-DYNA software. The thermal cycle of welding was set by mechanical characteristics of AMg61 alloy at temperatures of 150 and 300 °C. The results of the calculation of residual stresses during impact action of electrode-indenter at room and elevated temperatures in preliminary tensioned plates of AMg61 alloy of 3 mm thickness were presented. It is shown that the most acceptable temperature (from the studied temperature values) for the electrodynamic treatment of AMg61 alloy is 150 °C. Based on the results of the studies, it was found that the electrodynamic treatment of welded joint specimen in the form of a plate preliminary loaded with elastic tension leads to the transition of residual welding tensile stresses into compression stresses. 12 Ref., 2 Tabl. , 4 Fig.
Keywords: electrodynamic treatment, residual welding stresses, aluminium alloy, electric current pulse, impact interaction, finite-element model, electrode-indenter, elastic-plastic flow theory, fusion welding.


Received: 23.06.2022

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