PSI - Issue 48

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Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 48 (2023) 252–259

Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023) Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)

Review of failure analysis of coupling systems on trains Marija Vukšić Popović a, * , Jovan Tanasković b , Nebojša Međedović c Review of failure analysis of coupling systems on trains Marija Vukšić Popović a, * , Jovan Tanasković b , Nebojša Međedović c

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IRAS 2023 organizers Abstract This paper provides a comprehensive examination of the failure analysis of screw couplings and draw gears in trains across Europe and other countries where screw coupling systems are still used. The analysis of these failures reveals distinct characteristics, allowing for categorization of these failures into recurring patterns observed on other railways. The presence of various failure types indicates that multiple factors contribute to the occurrence of coupling system breaks, and these factors are not uniformly distributed. Many studies on failure analysis focus on investigating the fatigue of screw coupling and draw gear components through a combination of experimental tests and numerical analyses employing the finite element method. Apart from initial cracks and corrosion, some fractured elements do not exhibit signs of fatigue, necessitating consideration of other potential causes in the analysis. These causes may include overload, impact, inadequate material, or deficiencies in the heat treatment of fractured elements. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Abstract This paper provides a comprehensive examination of the failure analysis of screw couplings and draw gears in trains across Europe and other countries where screw coupling systems are still used. The analysis of these failures reveals distinct characteristics, allowing for categorization of these failures into recurring patterns observed on other railways. The presence of various failure types indicates that multiple factors contribute to the occurrence of coupling system breaks, and these factors are not uniformly distributed. Many studies on failure analysis focus on investigating the fatigue of screw coupling and draw gear components through a combination of experimental tests and numerical analyses employing the finite element method. Apart from initial cracks and corrosion, some fractured elements do not exhibit signs of fatigue, necessitating consideration of other potential causes in the analysis. These causes may include overload, impact, inadequate material, or deficiencies in the heat treatment of fractured elements. © 2023 The Authors. Published by ELSEVIER B.V. 1. Introduction This paper discusses system used between railway vehicles in Europe, which is made up of draw gear and screw coupling. They are responsible for transmitting traction and tensile forces between railway vehicles and the locomotive. According to Development of a concept for the EU-wide migration to a digital automatic coupling system (DAC) for rail freight transportation (2020), automatic coupling systems are employed worldwide, except in Europe a Academy of Technical and Art Applied Studies Belgrade, Department School of Railroad Transport, Zdravka Čelara 14,11000 Belgr ade, Serbia b University of Belgrade, Faculty of Mechanical Engineering, Department of Rail Vehicles, Kraljice Marije 16,11000 Belgrade, Serbia c Joint Stock Company for Freight Railway Transport - Serbia Cargo, Nemanjina 6, 11000 Belgrade, Serbia a Academy of Technical and Art Applied Studies Belgrade, Department School of Railroad Transport, Zdravka Čelara 14,11000 Belgr ade, Serbia b University of Belgrade, Faculty of Mechanical Engineering, Department of Rail Vehicles, Kraljice Marije 16,11000 Belgrade, Serbia c Joint Stock Company for Freight Railway Transport - Serbia Cargo, Nemanjina 6, 11000 Belgrade, Serbia Peer-review under responsibility of the IRAS 2023 organizers Keywords: Railway; Coupling system; Screw coupling; Failure; Draw gear Keywords: Railway; Coupling system; Screw coupling; Failure; Draw gear 1. Introduction This paper discusses system used between railway vehicles in Europe, which is made up of draw gear and screw coupling. They are responsible for transmitting traction and tensile forces between railway vehicles and the locomotive. According to Development of a concept for the EU-wide migration to a digital automatic coupling system (DAC) for rail freight transportation (2020), automatic coupling systems are employed worldwide, except in Europe

* Corresponding author. Tel.: /; fax: / E-mail address: marija.vuksic.popovic@vzs.edu.rs * Corresponding author. Tel.: /; fax: / E-mail address: marija.vuksic.popovic@vzs.edu.rs

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IRAS 2023 organizers 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IRAS 2023 organizers

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