English

Vol. 12 3, 2022 p 277 - 283

Pages

Article name, authors, abstract and keyword

277-283

Determination of mechanical inhomogeneity effect on stress-strain state of welded joint with crack-like defect

Marat Z. Yamilev a, b, Egor . Tigulev a, b, imur I. Bezymyannikov a, Igor F. Kantemirov b, Mars Z. Zaripov b

a Science & Technology Centre of Pipeline Transportation of Transneft R&D, LLC (STC Transneft R&D, LLC), 144/3 Oktyabrya Prospect, Ufa, 450055, Russian Federation
b Ufa State Petroleum Technological University, 1 Kosmonavtov Str., Ufa, 450062, Russian Federation

DOI: 10.28999/2541-9595-2022-12-3-277-283

Abstract: Mechanical and structural inhomogeneity of welded joints is a consequence of the thermal deformation cycle of welding and, among other factors, determines the complex stress-strain state of the sections of welded joints. At that there is a necessity to improve the mathematic loading model, which considers a variable inclination of contact planes of mechanical nonuniformity zones and direction of external load application. The paper considers a method for determining the complex shape of zones of mechanical heterogeneity of welded joints and possible analytical tools that consider the effect of zones of mechanical heterogeneity on determining the critical stress intensity and solving the Prandtl problem for a crack-like defect. It is concluded that it is advisable to quantitatively determine the effect of mechanical inhomogeneity on the bearing capacity of welded joints with a crack-like defect based on an integrated approach based on the results of calculations within the framework of an improved mathematical model, experimental data, as well as numerical methods implemented by special software methods.

Keywords: welded joint, strength calculation, mechanical inhomogeneity, crack-like defect, stress-strain state, microhardness, durability

For citation:
Yamilev M. Z., Tigulev E. ., Bezymyannikov . I., Kantemirov I. F., Zaripov . Z. Determination of mechanical inhomogeneity effect on stress-strain state of welded joint with crack-like defect. Science & Technologies: Oil and Oil Products Pipeline Transportation. 2022;12(3):277283. https://doi.org/10.28999/2541-9595-2022-12-3-277-283

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