QUASI-STATIC LATERAL TRAIN STABILITY MODEL. USER'S MANUAL

The computer program simulates a train section (which could represent an entire train) of up to 100 vehicles on a given track in either buff or draft condition. The model calculates lateral forces at the bolster centers and coupler pins, coupler angles, moments due to alignment control, bolster displacements, centrifugal and superelevation forces, and L/V ratios for both wheel climb and rail rollover. A quasi-static equilibrium position is attained when the bolster displacement and the lateral force are in the same direction. The consist is moved along the track and examined at intervals determined by the speed and time step specified by the user. The track length is limited to 2500 feet. The major application of the program is to investigate the influence of track geometry, vehicle parameters and buff (or draft) loading on the behavior of a train consist.

• Supplemental Notes:
  • See also Programming Manual, AAR Report R-208, RRIS 02 139452.
• Corporate Authors:

  Association of American Railroads Research Center

  3140 South Federal Street
  Chicago, IL  United States  60616

  Federal Railroad Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Railway Progress Institute

  801 North Fairfax Street
  Alexandria, VA  United States  22314

  Transportation Development Agency Centre

  800 rene-Leveque Boulevard West, Suite 600
  Montreal, Quebec H3B 1X9,   Canada 
• Authors:
  • Thomas, L R
  • MacMillan, R D
  • Martin, G C
• Publication Date: 0

Media Info

• Features: Tables;
• Pagination: 79 p.

Subject/Index Terms

• TRT Terms: Coefficients; Computer programs; Couplers; Derailments; Force; Overturning; Railroad rails; Railroad tracks; Structural design; Superelevation; Train operations; Train track dynamics
• Identifier Terms: FORTRAN (Computer program language)
• Uncontrolled Terms: Lateral dynamics; Track geometry
• Old TRIS Terms: Ibm 370; Rail overturning; Train performance
• Subject Areas: Design; Highways; Railroads;

Filing Info

• Accession Number: 00139451
• Record Type: Publication
• Source Agency: Association of American Railroads
• Report/Paper Numbers: No. R-207
• Files: TRIS, USDOT
• Created Date: Oct 6 1976 12:00AM