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Experimental and numerical research on the failure of railway vehicles coupling links

Lookup NU author(s): Dr Francis Franklin



This is the authors' accepted manuscript of an article that has been published in its final definitive form by Elsevier, 2021.

For re-use rights please refer to the publisher's terms and conditions.


Two modes of failure are analysed for coupling links, the mechanical connections that transmit traction forces between vehicles along the length of a train. Coupling links are designed to withstand the dynamic loads in normal operation but may break if applied loads exceed safe operating limits. Fractography of two failed links revealed that one had failed through brittle fracture, and one through ductile fracture. Metallography indicated that one sample was hardened and tempered with typical tempered martensite microstructure and the other was normalized with a ferrite-pearlite microstructure. A numerical model of a coupling link is developed and validated against experimental data. Results indicate that the failed links experienced loads above the permitted limit.

Publication metadata

Author(s): Vuksic Popovic M, Tanaskovic J, Glisic D, Radovic N, Franklin FJ

Publication type: Article

Publication status: Published

Journal: Engineering Failure Analysis

Year: 2021

Volume: 127

Online publication date: 21/05/2021

Acceptance date: 12/05/2021

Date deposited: 22/07/2021

ISSN (electronic): 1350-6307

Publisher: Elsevier


DOI: 10.1016/j.engfailanal.2021.105497


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