THERMAL PATTERNS IN 36 INCH FREIGHT CAR WHEELS DURING SERVICE TESTS

Service tests were conducted on the Atchison, Topeka and Santa Fe Railway Co. track at various speeds with an instrumented brake beam to determine the normal (perpendicular) and retarding (circumferential) brake shoe forces applied to a wheel set. The specially designed brake beam and load measuring transducers were installed in a truck under a 100-ton gondola used as the test car. The wheel set installed in this truck consisted of two different wheel designs mounted on the same axle. These wheels were instrumented with thermocouples embedded in the tread and plate areas to determine the temperature generated under controlled service brake application. Different types of brake shoes instrumented with thermocouples were also used to determine wheel-brake shoe heat flow characteristics. The retarding force applied to the wheel tread surface by the brake shoe was controlled by an air source independent of the train line source.

  • Supplemental Notes:
    • Contributed by the Rail Transportation Division of The American Society of Mechanical Engineers for presentation at the Winter Annual Meeting, New York, N.Y., December 5, 1976.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  USA  10016-5990
  • Authors:
    • Novak, G E
    • Dahlman, G E
    • ECK, B J
    • Kucera, W
  • Publication Date: 1976-12-5

Media Info

  • Features: Figures; References;
  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00145142
  • Record Type: Publication
  • Source Agency: American Society of Mechanical Engineers
  • Report/Paper Numbers: 76-WA/RT-11 Conf Paper
  • Files: TRIS
  • Created Date: Feb 1 1977 12:00AM