The Paton Welding Journal, 2021, №05



2021 №05 (07)

DOI of Article 10.37434/tpwj2021.05.08

2021 №05 (09)

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The Paton Welding Journal, 2021, #5, 46-50 pages

Calculation of residual stress-strain state of deposited steel sheet plates

I.K. Senchenkov¹, I.O. Ryabtsev², O.P. Chervinko¹ and A.A. Babinets²

¹S.P. Timoshenko Institute of Mechanics of the NAS of Ukraine 3 Nesterov Str., 02000, Kyiv, Ukraine
²E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Abstract
Finite-element calculation procedure was developed and stress-strain and microstructural state was studied at singleand two-layer surfacing of 3 mm sheets from St3 steel by Sv-Kh19N18G6M3V2, PP-Np-25Kh5FMS and Sv-08A wires. Calculations of SSS, microstructural state and shape change of the sheets at surfacing under the smooth support conditions were performed. The model of plane-deformation state (PDS) predicts greater deflections, compared to the model of plane-stress state (PSS), except for materials with martensite transformations (PP-Np-25Kh5FMS). At surfacing by materials with martersite transformations, greater deflections are in place due to volumetric effects of transformation. Except for deposited metal with martensite transformations (25Kh5FMS), the model of simultaneous deposition of a layer predicts greater deflection, compared to that of bead-by-bead deposition and it can be used for assessment of upper deflection limit. Satisfactory correlation was obtained for calculated and experimental data on surfaced sheet deflections. Rational schemes of supporting and fastening the element edges were determined, which provide minimum residual deflections. Ref. 7, 1 Table, 7 Figures.
Keywords: arc surfacing, stress-strain state, surfaced sheet deformations, Bodner–Partom model, deflection calculation procedure

Received 19.04.2021

References

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