CYCLIC DISTORTIONS AND STRESSES IN 36 INCH WHEELS UNDER COMBINED SERVICE LOADS

In previous publications the authors described analytical methods of determining the transient temperature distribution in railroad wheels due to tread braking. The stress fields caused by the combination of braking and non-symmetrical mechanical wheel-rail forces were determined throughout the body of the wheel. In this paper the authors utilize the methods developed in earlier work and present the stress fields for a 36-in. (914-mm) freight car wheel subjected to various cyclic mechanical and braking load combinations. The resultant stresses were determined at several angular positions relative to the wheel-rail contact plane to establish the magnitude of the maximum octahedral shear stresses. The distortion of the wheel is depicted in a film accompanying the presentation of this paper. This movie shows the distortion induced by a precribed service environment through 360 deg of wheel revolution.

• Supplemental Notes:
  • This paper was contributed by the Rail Transportation Division of the ASME for presentation at the Winter Annual Meeting, Houston, Texas, November 30 - December 5, 1975.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Novak, G E
  • ECK, B J
• Publication Date: 1975-11

Media Info

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

Subject/Index Terms

• TRT Terms: Brake shoes; Braking performance; Mathematical analysis; Metallurgy; Simulation; Stresses; Structural analysis; Thermal stresses; Vehicle design; Wheels
• Old TRIS Terms: Wheel design; Wheel metallurgy; Wheel stresses; Wheel thermal stresses
• Subject Areas: Design; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00128619
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: 75-WA/RT-5
• Files: TRIS
• Created Date: Jan 14 1976 12:00AM