COMMENTS ON LONG TRAINS

In this paper, equations of motion appropriate to long trains are derived which include the effects of undulating terrain. The formulation of a nonlinear dynamic programming problem to be applied to "programmed braking" is presented and the class of problems within the capability of available computing equipment is discussed. An analysis of the effect of undulating terrain on the operational response of long travelling at constant speed is presented in detail and numerical results for particular train configurations are given. In particular, the critical velocity for longitudinal resonance as a function of train length and terrain characteristic is given, and from the specialized results for the uniform train it is possible to discern the influence of changes in car mass, coupling stiffness, and so on.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08992029
• Supplemental Notes:
  • This paper appeared in Anthology of Rail Vehicle Dynamics, Volume 2) Effects of Train Action and Rail Car Vibration. The anthology was sponsored by the Rail Transportation Division, ASME. Presented at Winter Annual Meeting, New York, N.Y., Nov. 27-Dec. 1, 1966.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • McDowell, E L
• Publication Date: 1971

Media Info

• Features: Figures;
• Pagination: p. 79-83
• Serial:
  • Publication of: ASSOCIATION OF AMERICAN RAILROADS
  • Publisher: Association of American Railroads
  • ISSN: 0899-2029

Subject/Index Terms

• TRT Terms: Critical velocity; Equations of motion; Freight cars; Multiple unit trains; Train track dynamics
• Old TRIS Terms: Long trains; Longitudinal resonance
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00047417
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 14 1974 12:00AM