TOFC (TRAILER ON FLATCAR) LADING RESPONSE ANALYSES FOR SEVERAL TRACK PROFILE AND HUNTING CONDITIONS

The computer program FRATE is a non-linear, time domain digital computer program developed under Federal Railroad Administration sponsorship for the purpose of studying freight car response dynamics. The trailer on flatcar (TOFC) simulation contained in FRATE was expanded, for the purposes of the analyses of this report, to include a compliant lading representation. The compliant lading consisted of two spring mounted masses in each trailer with vertical, lateral and roll degrees of freedom. Analyses were performed to obtain the response of the TOFC vehicle and compliant lading to several track profiles and body hunting conditions. The analysis results characterize the response of a standard TOFC configuration to typical service conditions. Undesirable response conditions are noted and recommendations are made for improvements.

• Corporate Authors:

  Mitre Corporation

  Metrek Division, 1820 Dolley Madison Boulveard
  McLean, VA  United States  22102

  Federal Railroad Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Kachadourian, G
• Publication Date: 1980-4

Media Info

• Pagination: 73 p.

Subject/Index Terms

• TRT Terms: Computer programming; Computer programs; Defects; Dynamic loads; Dynamic tests; Freight cars; Hunting (Dynamics); Mathematical models; Piggyback transportation; Railroad tracks; Resonance frequency; Ride quality; Rocking; Rolling; Simulation; Trailer on flat car; Train track dynamics; Vehicle dynamics
• Uncontrolled Terms: Dynamic analysis; Dynamic response
• Old TRIS Terms: Freight car dynamics; Lading protection; Rock and roll; Track irregularities
• Subject Areas: Data and Information Technology; Freight Transportation; Railroads;

Filing Info

• Accession Number: 00314052
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FRA/ORD-80/3 Tech Rpt., MTR-79W00318
• Contract Numbers: DOT-FR-54090
• Files: NTIS, TRIS, USDOT
• Created Date: Aug 5 1980 12:00AM