Performance Characteristics of Freight-Car Trucks Determined Through Road Testing

[+] Author and Article Information
R. Byrne, J. A. Andresen

Southern Pacific Transportation Co., San Francisco, Calif.

J. Eng. Ind 99(1), 196-205 (Feb 01, 1977) (10 pages) doi:10.1115/1.3439137 History: Received August 02, 1976; Online July 15, 2010


The behavior of railroad freight-car trucks is described in relation to response modes developed within the truck structure and the freight car. A 70-ton-capacity mechanical refrigerator car equipped with conventional-style, friction-snubbed three-piece trucks was tested under a variety of conditions to develop performance behavior over the speed range of 10-79 mph. Testing was conducted on tangent track and curved track. Response behavior is described in graphs showing frequencies and amplitudes of significant descriptors.

Copyright © 1977 by ASME
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