Experimental characterisation of railway wheel squeal occurring in large-radius curves

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dc.contributor.author Fourie, Daniël J.
dc.contributor.author Grabe, P.J. (Hannes)
dc.contributor.author Heyns, P.S. (Philippus Stephanus)
dc.contributor.author Frohling, Robert D.
dc.date.accessioned 2017-05-12T06:41:07Z
dc.date.available 2017-05-12T06:41:07Z
dc.date.issued 2016
dc.description.abstract Tonal squeal noise (i.e. the high amplitude singing of a railway wheel with pure tone components) is emitted by some trailing inner wagon wheels on heavy haul trains in 1000m radius curves on the iron ore export line in South Africa. Field measurements have shown that the trailing inner wheels that squeal are subject to predominantly longitudinal creepage with little to no lateral creepage. The longitudinal creepage acting at the contact of the squealing wheels exceeds 1%, which supports the likelihood of creep saturation and subsequently squeal due to unsteady longitudinal creepage in the large radius curves. Experimental modal analysis of the wheel types identified to be relevant to squeal has revealed that for each unstable frequency, two eigenmodes are likely to be important: one which has a large mode shape component at the wheel-rail contact in the circumferential direction and another which has a large mode shape component at the wheel-rail contact in the radial direction. A frictional self-excitation mechanism based on mode-coupling is favoured as being responsible for squeal excited in large radius curves. en_ZA
dc.description.department Mechanical and Aeronautical Engineering en_ZA
dc.description.librarian hb2017 en_ZA
dc.description.uri http://pif.sagepub.com en_ZA
dc.identifier.citation Fourie, DJ, Grabe, PJ, Heyns, PS & Frohling R 2016, 'Experimental characterisation of railway wheel squeal occurring in large-radius curves', Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, vol. 230, no. 6, pp. 1561-1574. en_ZA
dc.identifier.issn 0954-4097 (print)
dc.identifier.issn 2041-3017 (online)
dc.identifier.other 10.1177/0954409715605142
dc.identifier.uri http://hdl.handle.net/2263/60331
dc.language.iso en en_ZA
dc.publisher Sage en_ZA
dc.rights © 2016 by Sage Publications en_ZA
dc.subject Noise en_ZA
dc.subject Wheel squeal en_ZA
dc.subject Longitudinal creepage en_ZA
dc.subject Mode-coupling en_ZA
dc.subject Experimental characterisation en_ZA
dc.title Experimental characterisation of railway wheel squeal occurring in large-radius curves en_ZA
dc.type Postprint Article en_ZA


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