RAILWAY TRUCK RESPONSE TO RANDOM RAIL IRREGULARITIES

This paper discusses the random response of a seven degree of freedom passenger truck model to lateral rail irregularities. Power spectral densities and root mean square levels of component displacements and contact forces are reported. The truck model used in the study allows lateral and yaw degrees of freedom for each wheelset, and lateral, yaw and roll freedoms for the truck frame. Linear creep relations are utilzed for the rail-wheel contact forces. The lateral rail irregularities enter the analysis through the creep expressions. The results described in the paper were obtained using frequency domain techniques to solve the equations of motion. The reported results demonstrate that the guidance force needed when traveling over irregular rail at high speed utilizes a significant portion of the total available tangential force between wheel and rail.

• Supplemental Notes:
  • This paper was contributed by the Rail and Transportation Division of ASME for presentation at the Winter Annual Meeting, 17-22 November 1974. New York, New York,
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Cooperrider, N K
• Publication Date: 1974-9

Media Info

• Features: Figures; References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Car trucks (Railroads); Defects; Motor vehicle dynamics; Railroad tracks; Suspension systems; Train track dynamics; Trucks; Vehicle design; Vehicle dynamics; Vehicle performance
• Old TRIS Terms: Car design; Dynamic vehicle performance; Track irregularities; Truck behavior
• Subject Areas: Design; Motor Carriers; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00072670
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: No. 74-WA/RT-2
• Files: TRIS
• Created Date: Jan 9 1976 12:00AM