Safety of the shaft-wheel assembly of electric locomotives

Shafts of electric locomotives are exposed to complex normal and tangential stresses during its exploitation. These stresses could have extremely high level producing the breakage of the shaft. It is well known that shafts have much longer service life than wheels. However, since the stresses in sha...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-05, Vol.200 (1), p.12024
Main Authors: Todic, M, Golubovic-Bugarski, V
Format: Article
Language:English
Subjects:
Breakage
Electric contacts
Electric railroads
Manufacturing
Microcracks
Railroad wheels
Safety
Service life
Stresses
Wheel-shaft assemblies
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Summary:Shafts of electric locomotives are exposed to complex normal and tangential stresses during its exploitation. These stresses could have extremely high level producing the breakage of the shaft. It is well known that shafts have much longer service life than wheels. However, since the stresses in shaft's material are high, it is possible to micro-cracks appear and propagate until the shaft's breakage. The breakage of the shaft may cause the great human and material losses. Because of that, during manufacturing these assemblies it must be taken into account all parameters which can initiate shaft crack. Geometric measure of seating and shaft are recommended by UIC regulations having great influence to quality and safety of realized assembly. The influence of contact surfaces and their lubrication during manufacturing the shaft - wheel assembly is shown in this paper.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/200/1/012024