HUNTING IN FREIGHT CARS (A BRIEF DESCRIPTION OF CAUSE AND CURES, WITH SOME RESULTS OF ROAD TESTS OF VARIOUS MODIFICATIONS)

A description of the forms of hunting observed in freight cars with three-piece trucks, using linear mathematics to give an engineering understanding of the oscillation and the forces causing it. The factors in the expressions giving the onset speeds show what can be done to raise or remove these speeds. Supporting test results are quoted, and the practical and economic limits appropriate to the freight car are emphasized. The initial need to establish the incidence and cost of hunting is mentioned.

• Supplemental Notes:
  • Contributed by the Rail Transportation Division of The American Society of Mechanical Engineers for presentation at the ASME-IEEE Joint Railroad Conference, Pittsburgh, Pa., April 3-4, 1974
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Reynolds, D J
• Publication Date: 1973-12

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 12 p.

Subject/Index Terms

• TRT Terms: Freight cars; Hunting (Dynamics); Train track dynamics; Trucks
• Subject Areas: Motor Carriers; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00054014
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: ASME #74-RT-2
• Files: TRIS
• Created Date: Jun 3 1974 12:00AM