THE EFFECT OF SPRING STIFFNESS, FRICTION DAMPING LEVEL, AND CAR BODY STIFFNESS UPON THE RIDE QUALITY OF RAILROAD FREIGHT CARS

An over-the-road test was performed for the purpose of determining the effect of various levels of spring stiffness and friction damping upon the ride quality of three different types of railroad cars. The primary difference among the three cars was their bending stiffness. They were a 50-ft, 70-ton box car, a standard level piggyback flat car, and a wide body, fully enclosed, tri-level autorack car. Instrumentation consisted of spring deflection transducers, vertical and lateral accelerometers and strain gages. Data will be presented primarily in the format of plots of acceleration versus speed with supporting plots of spring displacement and roll angles.

  • Supplemental Notes:
    • Contributed by the Rail Transportation Division of the American Society of Mechanical Engineers for presentation at the Winter Annual Meeting, San Francisco, California, December 10-15, 1978.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  USA  10016-5990
  • Authors:
    • Greenfield, L P
    • Wolf, E J
    • Hengel, M F
  • Publication Date: 1978-7-13

Media Info

  • Features: Figures; Tables;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00188065
  • Record Type: Publication
  • Source Agency: American Society of Mechanical Engineers
  • Report/Paper Numbers: 78-WA/RT-8 Conf Paper
  • Files: TRIS
  • Created Date: Feb 3 1979 12:00AM