Automatic Welding, 2021, №06



2021 №06 (07)

DOI of Article 10.37434/as2021.06.01

2021 №06 (02)

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Avtomaticheskaya Svarka (Automatic Welding), #6, 2021, pp. 3-12

Modeling of stressed and strain states of AMg6 alloy due to impact action of indenter-electrode in electrodynamic treatment

L.M. Lobanov¹, M.O. Pashchyn¹, O.L. Mikhoduj¹, P.V. Goncharov¹, Yu.M. Sydorenko², P.R. Ustymenko²

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

The calculated model of the process of impact interaction of the indenter-electrode with the plate of aluminum AMg6 alloy during electrodynamic treatment is presented. The solution of the problem is carried out on the basis of the Prantle-Reiss relations for the motion of an elastic-plastic medium in a plane two-dimensional Lagrangian formulation using the program «ANSYS/LS-DYNA». The results of the calculation of the process of forming areas of residual stresses and plastic deformations under the impact of the indenter are presented. It was found that under the impact of the indenter at a speed of 10 m/s on the back surface of the plate of AMg6 alloy, the values of plastic deformations are higher than on the back one. This is explained by the effect of reflection of a plastically deformed layer of metal from the back side of the plate, which stays in the conditions of resting on a rigid support. An experimental verification of the model adequacy during evaluation of the distribution of plastic deformations after electrodynamic treatment of a welded plate of AMg6 alloy was performed. 16 Ref., 2 Tabl., 9 Fig.
Keywords: electrodynamic treatment, aluminum alloy, impact interaction, mathematical modeling, residual stresses, plastic deformations, electrode-indenter, motion, elastic-plastic medium


Received: 26.03.2021

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