Automatic Welding, 2022, №09



2022 №09 (09)

DOI of Article 10.37434/as2022.09.01

2022 №09 (02)

---

Avtomaticheskaya Svarka (Automatic Welding), #9, 2022, pp. 5-11

Influence of electrode shape on stressed-strained state of AMg6 alloy during its electrodynamic treatment

L.M. Lobanov¹, M.O. Pashchyn¹, O.L. Mykhoduj¹, A.A. Hryniuk¹, P.V. Honcharov¹, A.O. Alyoshyn¹, T.G. Solomiychuk¹, Yu.M. Sydorenko², P.R. Ustymenko², Yuhui Yao³

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²NTUU «Kyiv Polytechnic Institute named after Igor Sikorsky». 37 Peremohy Ave., 03056, Kyiv. E-mail: mail@kpi.ua
³Shenzhen Hanzhizi Science and Technology Co., Ltd. 6th Floor, Building B, Bantian International Center, 5 Huancheng South Rd., Longgang District, Shenzhen, Guangdong, PRC. E-mail: 514929948@qq.com

The advantages of using electrodynamic treatment (EDT) of metal in the welding process as compared to EDT at room temperature were substantiated. The advantages and disadvantages of using electrode for EDT in the form of a cylindrical rod and a roller in the welding process were considered. Using the method of mathematical modeling in planar and axisymmetric statements, the effect of the shape of the electrode-indenter on stress-strain state of the welded plate from aluminum AMg6 alloy after applying the dynamic EDT component was evaluated. The features and differences of creation and use of developed mathematical models were described. The distribution of the values of the stress-strain state throughout the thickness of the plate was determined, in particular, the values of the zone of plastic deformations and stresses during interaction of the plate with the electrode-indenter moving at a speed of 5 m/s. It was found that the use of a cylindrical indenter with a hemispherical working end (axisymmetric shape) as compared to the roller (plane elongated shape) is more effective from the standpoint of optimizing the residual stress state in the plate. The use of a cylindrical indenter leads to the formation of compressive stresses in the plate with the values of up to -120 MPa. This should have a positive effect on the distribution of residual welding stresses under the action of the dynamic EDT component. 4 Ref., 3 Tabl., 7 Fig.
Keywords: electrodynamic treatment, aluminum alloy, impact interaction, mathematical modeling, residual stresses, plastic deformations, electrode-indenter, movement, elastoplastic environment


Received: 19.07.2022

References

1. Lobanov, L.M., Pivtorak, V.A., Savitsky, V.V., Tkachuk, G.I. (2006) Procedure for determination of residual stresses in welded joints and structural elements using electron speckle-interferometry. The Paton Welding J., 1, 24-29.
2. Lobanov, L.M., Pashchyn, M.O., Mikhodui, O.L. et al. (2021) Modeling of stress-strain states of AMg6 alloy due to impact action of electrode-indenter in electrodynamic treatment. Ibid, 6, 2-11. https://doi.org/10.37434/tpwj2021.06.01
3. 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. Strength of Materials, 45, 2, 210-220. https://doi.org/10.1007/s11223-013-9450-5
4. Lobanov L.M., Pashchin N.A., Mikhodui O.L., Sidorenko Y.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

---

Advertising in this issue:

---