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Volume 121
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10.3390/engproc2025121009
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Proceeding Paper

Design and Verification of Computation Model of Side Flap of Wagon Series Rens †

by
Vladislav Maznichki
1,*,
Svetoslav Slavchev
1,
Stefan Krastev
1 and
Stancho Ivanov
2
1
CoE “National Center of Mechatronics and Clean Technologies”, Technical University of Sofia, 1000 Sofia, Bulgaria
2
Department of Railway Engineering, Faculty of Transport, Technical University of Sofia, 8 Kliment Ohridski Blvd., 1000 Sofia, Bulgaria
*
Author to whom correspondence should be addressed.
†
Presented at the 17th International Scientific Conference on Aerospace, Automotive, and Railway Engineering (BulTrans-2025), Sozopol, Bulgaria, 10–13 September 2025.
Eng. Proc. 2026, 121(1), 9; https://doi.org/10.3390/engproc2025121009
Published: 13 January 2026
(This article belongs to the Proceedings of The 17th International Scientific Conference on Aerospace, Automotive, and Railway Engineering)
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Abstract

Side flaps are critical structural components of flat freight wagons, directly affecting cargo safety during transportation and playing an essential role in loading and unloading operations. Over the years, their reliability has been well established, with standardized designs available in UIC technical datasheets. Despite this standardization, the introduction of newly manufactured or redesigned components necessitates technological validation through Finite Element Method (FEM) simulations and/or physical testing. This requirement holds irrespective of whether the component in question adheres to existing standards or is a novel development. This study presents the creation and application of computational models for the structural sizing and strength assessment of side flaps for flat wagons. The models are verified through a series of physical tests conducted by a research team at the Technical University of Sofia.
Keywords: FEM; test; wagon; railway; verification; plastic deformation FEM; test; wagon; railway; verification; plastic deformation

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MDPI and ACS Style

Maznichki, V.; Slavchev, S.; Krastev, S.; Ivanov, S. Design and Verification of Computation Model of Side Flap of Wagon Series Rens. Eng. Proc. 2026, 121, 9. https://doi.org/10.3390/engproc2025121009

AMA Style

Maznichki V, Slavchev S, Krastev S, Ivanov S. Design and Verification of Computation Model of Side Flap of Wagon Series Rens. Engineering Proceedings. 2026; 121(1):9. https://doi.org/10.3390/engproc2025121009

Chicago/Turabian Style

Maznichki, Vladislav, Svetoslav Slavchev, Stefan Krastev, and Stancho Ivanov. 2026. "Design and Verification of Computation Model of Side Flap of Wagon Series Rens" Engineering Proceedings 121, no. 1: 9. https://doi.org/10.3390/engproc2025121009

APA Style

Maznichki, V., Slavchev, S., Krastev, S., & Ivanov, S. (2026). Design and Verification of Computation Model of Side Flap of Wagon Series Rens. Engineering Proceedings, 121(1), 9. https://doi.org/10.3390/engproc2025121009

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