Track-train dynamicsThe 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.
Document ID
19760039326
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Abbott, P. W. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Morosow, G. (Martin Marietta Aerospace Rockville, Md., United States)
Macpherson, J. (NASA Marshall Space Flight Center Huntsville, Ala., United States)
Date Acquired
August 8, 2013
Publication Date
November 1, 1975
Subject Category
Urban Technology And Transportation
Report/Patent Number
SAE PAPER 751058
Meeting Information
Meeting: National Aerospace Engineering and Manufacturing Meeting