RESEARCH PAPERS: Papers on Rail Transportation

Roll Dynamics Unit (RDU) Truck Hunting Demonstration

[+] Author and Article Information
S. K. Punwani, A. V. Arslan

Association of American Railroads, Chicago, Ill. 60616

J. Eng. Ind 106(1), 11-15 (Feb 01, 1984) (5 pages) doi:10.1115/1.3185903 History: Received July 01, 1983; Online July 30, 2009


The paper describes a test program conducted in order to demonstrate the capabilities of a Roll Dynamics Unit built at the Transportation Test Center, Pueblo, Colorado. A detailed description of the test program, the RDU and Test Track results, and correlation with a 25 deg-of-freedom analytical truck hunting model is provided. The stability characteristics of conventional 89-ft (27.1-m) lateral flat car, which was borrowed from TOFC service and was equipped with convention three-piece freight car trucks, were defined. During the test the car was equipped with two different sets of wheel profiles, one of which was service-worn. It clearly demonstrated the usefulness of the Roll Dynamics Unit for lateral dynamics testing.

Copyright © 1984 by ASME
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