EFFECT OF HEAVY CARS ON RAIL

The basis for Union Pacific's decision that 125-ton cars on four-axles have exceeded the wheel loads which track can sustain is illustrated. The rail head steel is stressed beyond its elastic limit by such cars and plastic flow ensues. The author says that rail life decreases exponentially as wheel loads are raised.

• Supplemental Notes:
  • Proceedings, 76th AREA Technical Conference, Chicago, Illinois, March 29-31, 1977.
• Corporate Authors:

  American Railway Engineering Association

  59 East Van Buren Street
  Chicago, IL  United States  60605
• Authors:
  • Sunnygard, J R
• Publication Date: 1977-6

Media Info

• Features: Figures; References;
• Pagination: p. 611-635
• Serial:
  • AREA BULLETIN
  • Volume: 78
  • Issue Number: 663
  • Publisher: American Railway Engineering Association

Subject/Index Terms

• TRT Terms: Axle load force; Fatigue (Physiological condition); Four axle cars; High capacity cars; Rail steel; Railroad rails; Service life; Shelling (Metals); Stresses
• Old TRIS Terms: Axle loadings; Rail life; Rail shelling; Rail steel metallurgy; Rail stress
• Subject Areas: Design; Railroads;

Filing Info

• Accession Number: 00163778
• Record Type: Publication
• Report/Paper Numbers: Conf Paper
• Files: TRIS
• Created Date: Oct 29 1977 12:00AM