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.
- Presented at a meeting Nov. 17-20, 1975.
Warrendale, PA United States 15096
- Abbott, P W
- Morosow, G
- Macpherson, J
- Publication Date: 1975
- Pagination: 13 p.
- TRT Terms: Car trucks (Railroads); Derailments; Dynamic tests; Hopper cars; Hunting (Dynamics); Mathematical models; Suspension systems; Train track dynamics; Trucks
- Uncontrolled Terms: Dynamic analysis
- Subject Areas: Motor Carriers; Railroads; Vehicles and Equipment;
- Accession Number: 00132937
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: N751058 Preprint
- Files: TRIS
- Created Date: Jun 5 1976 12:00AM