Assessment of crack resistance of side frames of freight car bogies during design
https://doi.org/10.46973/0201-727X_2025_1_211
Abstract
The existing problem of cracks in cast parts of freight car bogies periodically detected during operation, threatening traffic safety, requires new approaches to theoretical and practical assessment of the crack formation process in car structures. The problem of predicting crack resistance of structures at the design stage is of relevance. Method Theoretical and experimental studies of crack formation in cast elements of a bogie with an axial load of 25 t / axle were performed. Results: The sizes and configuration of initial defects, at which crack growth is possible, were determined based on the stress intensity factors at the crack tips and crack-like defects in the axle box assembly of the side frame. The conditions for crack opening and propagation were modeled and analyzed. Experimental studies of the resource of side frames of a bogie with an axial load of 25 t / axle were carried out and compared with the modeling results. Practical significance: Approaches to assessing the crack resistance of side frames of freight car bogies are proposed, allowing more accurate prediction of the possibility of crack formation in cast elements of the bogie during operation. Individual research results are used in developing new side frames for bogies with an axle load of 25 t/axle.
About the Authors
L. V. Tsyganskaya
Joint-Stock Company "Scientific and Implementation Center "Vagony" (JSC "SIC "Vagony"), Emperor Alexander I St. P etersburg State Transport University (PGUPS)
Russian Federation
Russian Federation
Tsyganskaya Lyudmila Valerievna, Chair “Wagons and Wagon Facilities”, Candidate of Engineering Sciences, Associate Professor, Deputy General Director – Chief Designer of NIB
V. A. Chernov
Joint-Stock Company "Scientific and Implementation Center "Vagony" (JSC "SIC "Vagony"), Emperor Alexander I St. Petersburg State Transport University (PGUPS)
Russian Federation
Russian Federation
Chernov Vladimir Alexandrovich, Chair “Wagons and Wagon Facilities”, Executive Director, Associate Professor
D. G. Bein
Joint-Stock Company "Scientific and Implementation Center "Vagony" (JSC "SIC "Vagony"), Scientific Research Bureau (NIB)
Russian Federation
Russian Federation
Bein Dmitry Grigorievich, Candidate of Engineering Sciences, Deputy Chief Designer of NIB, Full Member of the Russian Academy of Transport
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Review
For citations:
Tsyganskaya L.V., Chernov V.A., Bein D.G. Assessment of crack resistance of side frames of freight car bogies during design. Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. 2025;(1):211-218. (In Russ.) https://doi.org/10.46973/0201-727X_2025_1_211
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