The Paton Welding Journal, 2021, №06



2021 №06 (07)

DOI of Article 10.37434/tpwj2021.06.01

2021 №06 (02)

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The Paton Welding Journal, 2021, #6, 2-11 pages

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

L.M. Lobanov¹, M.O. Pashchyn¹, O.L. Mikhodui¹, P.V. Goncharov¹, Yu.M. Sydorenko² and P.R. Ustymenko²

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

Abstract
The calculated model of the process of impact interaction of the electrode-indenter with the plate of aluminium 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 movement of an elastic-plastic medium in a plane two-dimensional Lagrangian formulation using the software «ANSYS/LS-DYNA». The results of calculating the process of forming areas of residual stresses and plastic deformations under the impact action of the indenter are presented. It was found that under the impact action of the indenter at a speed of 10 m/s on the reverse surface of the plate of AMg6 alloy, the values of plastic deformations are higher than on the contact 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 Tables, 9 Figures.
Keywords: electrodynamic treatment, aluminium alloy, impact interaction, mathematical modeling, residual stresses, plastic deformations, electrode-indenter, movement, elastic-plastic medium

Received 26.03.2021

References

1. Masubuchi, K. (1980) Analisis of Welded structures. Pergamon Press.
2. Lashchenko, G.I., Demchenko, Yu.V. (2008) Energy-saving technologies of postwelding treatment of metal structures. Kiev, Ekotekhnologiya [in Russian].
3. Lobanov, L.M., Pashin, N.A., Mihoduy, O.L., Khokhlova, J.A. (2016) Investigation of residual stress in welded joints of heat-resistant magnesium alloy ML10 after electrodynamic treatment. Journal of Magnesium and Alloys, 4, 77-82. https://doi.org/10.1016/j.jma.2016.04.005
4. Lobanov, L.M., Pashin, N.A., Mihoduy, O.L. (2014) Repair the АМг6 aluminum alloy welded structure by the electric processing method. Weld Research and Application, 1, 55-62.
5. Lobanov, L.M., Pashin, N.A., Mikhodui, O.L., Sidorenko, Yu.M. (2018) Electric Pulse Component Effect on the Stress State of AMg6 Aluminum Alloy Welded Joints Under Electrodynamic Treatment. Strength of Materials, 50, 2, 246-253. https://doi.org/10.1007/s11223-018-9965-x
6. Lobanov, L.M., Pashchin, N.A., Timoshenko, A.N. et al. (2017) Effect of the Electrodynamic Treatment on the Life of AMg6 Aluminum Alloy Weld Joint. Ibid, 49, 2, 234-238. https://doi.org/10.1007/s11223-017-9862-8
7. Sidorenko, Yu.M., Shlenskii, P.S. (2013) On the Assessment of Stress-strain State of the Load-Bearing Structural Elements in the Tubular Explosion Chamber. Ibid, 45, 2, 210-220. https://doi.org/10.1007/s11223-013-9450-5
8. http://www.ansys.com/
9. http://www.ls-dyna.ru/
10. Mujzemnek, A.Yu., Bogach, A.A. (2005) Mathematical modeling of shock and explosion processes in LS-DYNA program. In: Manual. Penza, Inform. Izd. Tsentr PGU [in Russian].
11. Babkin, A.V., Kolpakov, V.I., Okhitin, V.N. et al. (2000) Numerical methods in problems of explosion and shock physics. In: Manual for higher educ. instit. Ed. by V.V. Selivanov. Moscow, MGTU, Vol. 3 [in Russian].
12. Rudakov, K.M. (2007) Numerical methods of analysis in dynamics and strength of structures. In: Manual. Kyiv, NTUU KPI [in Ukrainian].
13. Odintsov, V.A., Sidorenko, Yu.M. (2001) Modeling of the explosion process of standard fragmentation cylinder with varying degrees of detail. Oboronnaya Tekhnika, 1-2, 17-20 [in Russian].
14. Lobanov, L.M., Pashin, N.A., Mykhodui, O.L., Sydorenko, Yu.M. (2017) Effect of the Indenting Electrode Impact on the Stress-Strain State of an AMg6 Alloy on Electrodynamic Treatment. Strength of Materials, 49, 3, 369-380. https://doi.org/10.1007/s11223-017-9877-1
15. Kasatkin, B.S., Prokhorenko, V.M., Chertov, I.M. (1987) Welding stresses and strains. Kiev, Vyshcha Shkola [in Russian].
16. Sydorenko, Y.M., Pashchyn, M.O., Mykhodui, O.L. et al. (2020) Effect of Pulse Current on Residual Stresses in AMg6 Aluminum Alloy in Electrodynamic Treatment. Strength of Materials, 52(5), 731-737. https://doi.org/10.1007/s11223-020-00226-2

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