The purpose of this paper is to outline one of the serious dynamic problems involving railroad cars and to propose an orderly approach to the definition of a dynamic model through analysis and testing that can be used to investigate various fixes. The problem in question is the hunting phenomenon involving lateral instability of the car suspension (trucks). This phenomenon has been recognized as a major contributing factor in a significant number of derailments causing millions of dollars in losses. This paper expounds on the mechanics and characteristics of hunting. The planned solution is outlined as a building block approach directed at formulating a test verified dynamic model of an open hopper freight car-truck assembly. Results obtained to date are presented together with conclusions related to the program.

  • Supplemental Notes:
    • Presented at a meeting Nov. 17-20, 1975.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Abbott, P W
    • Morosow, G
    • Macpherson, J
  • Publication Date: 1975

Media Info

  • Pagination: 13 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00132937
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: N751058 Preprint
  • Files: TRIS
  • Created Date: Jun 5 1976 12:00AM