EFFECTS OF CENTERPLATE FRICTION ON TRUCK YAW HUNTING AND CARBODY LATERAL STABILITY

Observations of rail vehicle behavior indicate that metal-to-metal centerplate bearings are governed by Coulomb friction. A ten-degree-of-freedom, half-vehicle minicomputer model is used to investigate the behavior of a typical rail vehicle, with and without Coulomb centerplate friction. It is shown that Coulomb centerplate friction damps out small-amplitude yaw oscillations of a truck operating above its "critical speed," while larger-amplitude yaw oscillations can be self-sustaining or unstable. It is also shown that Coulomb centerplate friction can either improve or degrade carbody lateral stability, as compared to a vehicle with frictionless centerplates. Practical design alternatives are discussed.

  • Supplemental Notes:
    • Contributed by the Rail Transportation Division of the American Society of Mechanical Engineers for presentation at the Joint ASME/IEEE Railroad Conference, April 28-30, 1981.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  USA  10016-5990
  • Authors:
    • Woytowich, R T
  • Publication Date: 1981-1

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 7 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00334692
  • Record Type: Publication
  • Report/Paper Numbers: 81-RT-9 Conf Paper
  • Files: TRIS
  • Created Date: Jul 9 1981 12:00AM