CHICAGO, BURLINGTON AND QUINCY RAILROAD - RAIL STRESS

A test was conducted by Electro-Motive Division, G.M.C., to measure stresses in 60- and 72-lb. rerolled rails on branch track. AAR believes that the maximum computed rail stress including impact or speed effect should be limited to 35,000 psi, for speeds of 35 mph. and less. Over 35 mph, the stress should be limited to 30,000 psi. For 72-lb. rail, the EMD diesel, had a computed rail stress of 35,000 psi, at 4 mph, so it would not seem advisable to operate this locomotive at more than 10 mph. For C, and N. W. diesel the maximum speed of 35 mph, is the limiting speed for the allowable stress of 35,000 psi. The 35 mph limit is also applicable to loaded coal car. The EMD diesel should not be operated on 60-lb rail. The C and N. W. diesel had a computed rail stress of 35,000 psi at 34 mph. The loaded coal car reached this stress at 19.5 mph, on 60-lb rail.

• Corporate Authors:

  Association of American Railroads

  3140 South Federal Street
  Chicago, IL  United States  60605
• Authors:
  • McGee, G M
• Publication Date: 1951-9-7

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 6 p.

Subject/Index Terms

• TRT Terms: Diesel locomotives; Field tests; Freight cars; Hopper cars; Locomotives; Mathematical models; Railroad cars; Railroad rails; Size; Stresses; Technology; Velocity; Wheels
• Geographic Terms: United States
• Old TRIS Terms: Mathematical studies; Rail stress; Wheel size
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00040040
• Record Type: Publication
• Report/Paper Numbers: T2252
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM