PERMISSIBLE SPEED OF FREIGHT CARS ON CURVES

In Part I, the dynamic effects due to lateral roll motion of a freight car are analyzed and the position of the resultant dynamic force with respect to center line of track for cars having 71, 85 and 99 inches combined center of gravity heights is calculated. These calculations use data on the amplitudes of the lateral roll motion of a fully loaded 70-ton 55-ft gondola which were measures during an extensive series of running tests on the Lackawanna Railroad in 1955. In Part II, calculations, based on extensive tests with freight cars having center-of-gravity heights of 71, 85 and 99 in with 3 11/16 in travel springs and conventional snubbing, were used to establish the elevation for curves and maximum permissible speeds for the operation of freight trains.

• Corporate Authors:

  American Railway Engineering Association

  59 East Van Buren Street
  Chicago, IL  United States  60605
• Publication Date: 1969

Media Info

• Features: Figures;
• Pagination: p. 1019-10
• Serial:
  • Publication of: International Union of Railways
  • Volume: 70

Subject/Index Terms

• TRT Terms: Critical velocity; Curved track; Freight cars; Gondola cars; Mathematical models; Railroad cars; Railroad tracks; Snubbers; Spring; Structural design; Superelevation; Suspensions; Technology; Velocity
• Uncontrolled Terms: Lateral dynamics; Track geometry
• Geographic Terms: United States
• Old TRIS Terms: Mathematical studies
• Subject Areas: Design; Highways; Railroads;

Filing Info

• Accession Number: 00040171
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 6 1976 12:00AM