A CRITERION FOR THE CONTROL OF 100 TON HOPPER CAR ROLL MOTION
A program of experimental investigation was undertaken by the Canadian National Railways with the object of preventing 100 ton hopper cars from derailing. It has been realized for several years that 100 ton hopper cars have a tendency to derail at low speeds and that the derailments are associated with excessive car rolling. The solution to the problem requires that the roll motion be kept within tolerable limits under service conditions. The control which is needed to limit the roll motion can be achieved by appropriate modifications to the suspension system. The selection of the most suitable modification involves an engineering decision based upon an understanding of the environmental conditions. An empirical approach to the problem was taken by the Canadian National to provide the environmental data necessary to evaluate the performance of any car, with or without modifications to the suspension. This paper discusses data derived from this experimental work and presents a criterion for the control of the roll motion.
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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 the ASME-IEEE Railroad Conference, Chicago, Ill., Mar. 27-28, 1968.
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Corporate Authors:
American Society of Mechanical Engineers
Two Park Avenue
New York, NY United States 10016-5990 -
Authors:
- Henderson, Kyvory A
- Johnson, J
- Conference:
- Publication Date: 1971
Media Info
- Features: Figures; Tables;
- Pagination: p. 269-279
Subject/Index Terms
- TRT Terms: Derailments; Freight cars; Hopper cars; Rocking; Rolling; Train track dynamics
- Old TRIS Terms: Rock and roll; Roll motion
- Subject Areas: Railroads; Safety and Human Factors; Vehicles and Equipment;
Filing Info
- Accession Number: 00047434
- Record Type: Publication
- Report/Paper Numbers: Paper
- Files: TRIS
- Created Date: Nov 14 1974 12:00AM