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Track-Train Dynamics
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English
Abstract
The purpose of this paper is to outline one of the serious dynamic problems involving railroad cars and to propose an orderly approach to the definition of a dynamic model through analysis and testing that can be used to investigate various fixes. The problem in question is the hunting phenomenon involving lateral instability of the car suspension (trucks). This phenomenon has been recognized as a major contributing factor in a significant number of derailments causing millions of dollars in losses. This paper expounds on the mechanics and characteristics of hunting. The planned solution is outlined as a building block approach directed at formulating a test verified dynamic model of an open hopper freight car-truck assembly. Results obtained to date are presented together with conclusions related to the program.
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Citation
Abbott, P., Morosow, G., and Macpherson, J., "Track-Train Dynamics," SAE Technical Paper 751058, 1975, https://doi.org/10.4271/751058.Also In
References
- American Steel Foundries Participation in AAR/RPI/FRA Track Train Dynamics Program - Parts 1-7
- Cooperrider N. K. “The Hunting Behavior of Conventional Railway Trucks,” ASME December 1970 New York
- Vermeulen P. J. Johnson K. L. “Contact of Nonspherical Elastic Bodies Transmitting Tangential Forces,” Journal of Applied Mechanics 31 Trans. ASME 86 2 June 1964 338 340
- Law E. H. “Nonlinear Wheelset Dynamic Response to Random Lateral Rail Irregularities,” ASME November 1973 Detroit, Michigan