ANALYTICAL METHODS FOR FREIGHT CAR/TRUCK DYNAMIC PROBLEMS
The analytical methods used to synthesize mathematical models of an 80-ton open hopper railroad car are presented in this report. The work described herein was performed as part of the Track-Train Dynamics program by the Analytical Mechanics Section, Martin Marietta Corporation, Denver Division. This effort was directed toward accurately characterizing the dynamic behavior of this specific railcar configuration. In a larger sense, model formulation and solution using the methods detailed here serve as a potential approach to the characterization of other railcar configurations. The report details the formulation of a nonlinear model including the carbody, trucks, and wheel/rail interactions. In particular hunting stability of the railcar was investigated, and analytical results were compared to actual test data. Test/analytical correlation was very good.
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Corporate Authors:
Martin Marietta Corporation
P.O. Box 179
Denver, CO United States 80201Federal Railroad Administration
Office of Research and Development, 1200 New Jersey Avenue, SE
Washington, DC United States 20590 - Publication Date: 1980-7
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 54 p.
Subject/Index Terms
- TRT Terms: Dynamics; Freight cars; Hopper cars; Hunting (Dynamics); Mathematical models; Motor vehicle bodies; Rail (Railroads); Rolling contact; Stability (Mechanics); Train track dynamics; Trucks; Validation; Vehicle dynamics; Wheels
- Old TRIS Terms: Car body; Freight car dynamics; Truck dynamics
- Subject Areas: Motor Carriers; Railroads; Vehicles and Equipment;
Filing Info
- Accession Number: 00319052
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FRA/ORD-80/29 Tech Rpt., MCR-80-531
- Contract Numbers: NAS8-29882
- Files: TRIS, USDOT
- Created Date: Sep 16 1980 12:00AM