THE SLIDING SILL UNDERFRAME IN IMPACT SITUATIONS

Simplified equations of motion for an idealized representation of the sliding sill cushion unit are developed using experimental data from the literature. These equations are then coupled with the fundamental mass, stiffness, and damping characteristics of conventional and sliding sill rail cars to provide an analytical model of the action of sliding sills in impact situations. The equations are solved in closed form for simple impacts and are solved numerically for more complicated impacts. The numerical results are compared with experimental data from an actual switchyard impact.

• Supplemental Notes:
  • This work was sponsored by the United States Department of Transportation. Contributed by the Rail Transportation Division of The American Society of Mechanical Engineers for presentation at the Winter Annual Meeting, New York, N.Y., December 5, 1976.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Peters, D A
• Publication Date: 1976-12-5

Media Info

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

Subject/Index Terms

• TRT Terms: Classification yards; Cushioning materials; Freight cars; Impacts; Mathematical models; Occupant protection devices; Train track dynamics; Vehicle frames
• Uncontrolled Terms: Impact protection
• Old TRIS Terms: Cushioning; Underframes
• Subject Areas: Railroads; Safety and Human Factors; Terminals and Facilities; Vehicles and Equipment;

Filing Info

• Accession Number: 00145140
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: 76-WA/RT-13 Conf Paper
• Files: TRIS
• Created Date: Feb 1 1977 12:00AM