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 traversing 1000 m 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 subsequent squealing 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 that has a large mode shape component at the wheel–rail contact in the circumferential direction and another that 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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Contributors:


    Publication date :

    2016-08-01


    Size :

    14 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Railway wheel squeal (Squeal of a rotating disk)

    Nakai, M. / Yokoi, M. / Sugiura, M. | Tema Archive | 1989


    Experimental and theoretical investigation of railway wheel squeal

    Hsu, S. S. / Huang, Z. / Iwnicki, S. D. et al. | British Library Online Contents | 2007


    Experimental and theoretical investigation of railway wheel squeal

    Hsu, S S / Huang, Z / Iwnicki, S D et al. | SAGE Publications | 2007