Automatic Welding, 2026, №02

2026 №02 (07)

DOI of Article 10.37434/as2026.02.01

2026 №02 (02)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #2, 2026, pp. 3-16

Computer program forstress-strain state modeling circumferential welded joint

L.M. Lobanov, O.V. Makhnenko, O.S. Milenin, O.A. Velykoivanenko, G.P. Rozynka, N.R. Basystuk, G.Yu. Saprykina

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: makhnenko@paton.kiev.ua

The «Girth Weld» computer program enables computational analysis of mechanical properties in circumferential welded joints (girth welds) of pipelines and pressure vessels, including: weld metal and heat-affected zone (HAZ) properties, residual stresses and deformations, stress-strain state redistribution under post-weld heat treatment, operational loads, or pressure testing, structural integrity assessment and service life prediction for welds with discontinuities (detected by non-destructive testing or postulated). The program requires no specialized skills in computational methods, automating key processes such as parametric modeling of multi-pass girth welds, finite element mesh generation, solver execution and results visualization. Despite minimal hardware and time requirements, «Girth Weld» ensures high accuracy through advanced modeling of welding physico-chemical processes, efficient algorithms for nonlinear problems, optimized solutions for high-order differential equations. 6 Ref., 3 Tabl., 16 Fig.
Keywords: multi-pass welding, girth welded joint, computer program, mathematical modeling, finite element method, mechanical properties, residual stresses, deformations, post weld heat treatment, operational loads, defect acceptability


Received: 22.05.2025
Received in revised form: 24.11.2025
Accepted: 10.04.2026
Posted online 11.04.2026

References

1. Makhnenko, V.I. (2006) Resource of safe operation of welded joints and units of modern structures. Kyiv, Naukova dumka [in Russian].
2. Makhnenko, V.I., Velikoivanenko, E.A., Pochinok, V.E., Makhnenko, O.V., Rozynka, G.Ph., Pivtorak, N.I. (1999) Numerical methods for the predictions of welding stresses and distortions. Welding and Surfacing Reviews, 13(1), 1–146.
3. Yuryev, S.F. (1950) Specific volumes of phases in the martensitic transformation of austenite. Moscow, Metallurgizdat [in Russian].
4. Mannesmann. CCT diagram for steel X10CrMoVNb91. — Data Sheet 435 R, material 1/4903. — February 1996 Edition.
5. Kasatkin, O.G., Zeiffarth, P. (1001) Calculation models for evaluation of mechanical properties of HAZ metal in welding of low-alloy steels. In: Collection of works of the international conference «Mathematical modeling and information technologies in welding and related processes». Kyiv, pp. 103–106 [in Russian].
6. Belomytsev, M.Yu., Molyarov, V.G. (1994) Study of the structure and construction of the thermokinetic diagram of the decomposition of austenite in 10GN2MFA steel. Izvestyia vysshykh zavedenyi. Chernaia metallurhyia, 3, 47–49 [in Russian].

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Suggested Citation

L.M. Lobanov, O.V. Makhnenko, O.S. Milenin, O.A. Velykoivanenko, G.P. Rozynka, N.R. Basystuk, G.Yu. Saprykina (2026) Computer program forstress-strain state modeling circumferential welded joint. Avtom. Zvaryuvannya, 02, 3-16.