Dynamics of Wagon System Containing Out-of-Round Wheels Subject to Brake Torque

Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Effect of out-of-round (OOR) wheels to the vertical and longitudinal accelerations of wagons subject to braking is reported. A multibody dynamic model that enables application of braking torque naturally with no need to specifying speed profile as a priori was formulated for this purpose. OOR was considered as a periodic defect of six orders around the wheel tread with an amplitude of deviation from design radius of 0.5 mm. Magnitude of the braking torque was limited below the level of skid risk; brake torque was applied gradually in 4 s. OOR was found to dominate (masking the effect of braking) the accelerations of the wheelsets and bogie frames. Longitudinal accelerations were much larger than the vertical accelerations. Accelerations in wagon body were well damped with no significant difference between defect-free and OOR wheels with and without braking.


Out-of-round wheels Braking torque Wagon dynamics 


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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Anhui Communications Vocational and Technical CollegeHefeiChina
  2. 2.Queensland University of TechnologyBrisbaneAustralia
  3. 3.Institut Teknologi BandungBandungIndonesia

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