Introduction of Falling Friction Coefficients into Curving Calculations for Studying Curve Squeal Noise

In this paper, a method of introducing falling friction coefficients into curving simulations for studying curve squeal noise is presented. Generation of squeal at the wheel of a railway vehicle in a curve is caused by unstable vibration, caused in turn by a lateral wheel/rail force which reduces with increasing lateral creepage. To model vehicle curve squeal, the wheel/rail tangential force in the curving simulation is calculated by a modified version of FASTSIM, which uses a sliding velocity-dependent friction characteristic. Using the falling friction characteristics, a UK passenger vehicle is modelled with SIMPACK. Curving behaviour is simulated for a range of curve radii and cant deficiencies. The wheel/rail contact properties are then obtained to study the possibility of the occurrence of squeal using a frequency-domain method. The methodology in this paper allows various curves, wheel/rail profiles, vehicle speeds and friction characteristics to be taken into account.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 261-271
  • Monograph Title: Proceedings of the 19th Symposium of the International Association for Vehicle System Dynamics
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01046799
  • Record Type: Publication
  • ISBN: 9780415436168
  • Files: TRIS
  • Created Date: Apr 6 2007 2:34PM