OPTIMIZING RAILROAD FREIGHT CAR TRUCK SUSPENSION SYSTEMS HAVING COULOMB DAMPING

This paper describes the design process followed in developing a 100 ton freight car truck suspension system having coulomb damping. Classical linear vibration analysis was used for the conceptual design phase. Within the constraint placed upon truck suspension systems, a constant damping parameter, i.e., the ratio of friction force to static force imparted by the base, for all load conditions was established as a design goal. Optimization of the actual design parameters and comparison to existing truck suspensions was accomplished using the latest vehicle model developed by the AAR/TTD.

• Supplemental Notes:
  • Contributed by the Rail Transportation Division of ASME for presentation at the Winter Annual Meeting, Atlanta, Georgia, November 27-December 2, 1977.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Bullock, R L
  • Cooley, D B
• Publication Date: 1977

Media Info

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

Subject/Index Terms

• TRT Terms: Analysis; Damping (Physics); Design; Freight cars; Ride quality; Service life; Spring; Suspension systems; Trucks; Vehicle components; Vehicle design; Vehicle dynamics
• Uncontrolled Terms: Design criteria; Performance analysis
• Old TRIS Terms: Analytical techniques; Freight car dynamics
• Subject Areas: Design; Motor Carriers; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00168014
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: 77-WA/RT-6 Conf Paper
• Files: TRIS
• Created Date: Jan 30 1978 12:00AM