A conventional three-piece truck with load sensitive friction snubbing was tested as a complete assembly with its wheels resting on a fixed section of rail and with loads applied through a fixture that duplicated the body bolster at the truck bolster interface. The purpose of the testing was to determine the stiffness and friction forces of the truck under vertical, lateral, and roll moment loading conditions. Loads were varied to cover a range of car gross weight conditions. The test was quasi-static in that load application was varied at sinusoidal rates of 0.1 or 0.2 Hertz to minimize errors in spring rate measurement caused by friction snubber forces. The desired stiffness and friction force data were obtained in terms of system rather than component properties and are consequently more directly usable in mathematical models. The roll test data were particularly useful because separate spring rates were obtained for the different conditions of center plate seated, center plate rocking, and side bearing contact. Because of the sinusoidal method of load application, it was possible to obtain system spring rates with the friction snubbers static and sliding.
Skip Nav Destination
Article navigation
February 1984
This article was originally published in
Journal of Engineering for Industry
Research Papers
Stiffness and Friction Force Measurements on a Freight Car Truck from Quasi-Static Tests
D. W. Inskeep
D. W. Inskeep
Association of American Railroads
Search for other works by this author on:
G. Kachadourian
The MITRE Corporation
C. L. Orth
Federal Railroad Administration
D. W. Inskeep
Association of American Railroads
J. Eng. Ind. Feb 1984, 106(1): 16-20
Published Online: February 1, 1984
Article history
Received:
July 1, 1983
Online:
July 30, 2009
Article
Article discussed|
View article
Connected Content
Citation
Kachadourian, G., Orth, C. L., and Inskeep, D. W. (February 1, 1984). "Stiffness and Friction Force Measurements on a Freight Car Truck from Quasi-Static Tests." ASME. J. Eng. Ind. February 1984; 106(1): 16–20. https://doi.org/10.1115/1.3185904
Download citation file:
Get Email Alerts
Cited By
Arc characteristics of aluminum alloy double-wire high-frequency pulsed GMAW
J. Manuf. Sci. Eng
Gravitational Effects on Optical Lens Fabrication: First Insides on Earth- and Microgravity Experiments
J. Manuf. Sci. Eng (December 2024)
Related Articles
The Effects of the Lateral Instability of High Center of Gravity Freight Cars
J. Eng. Ind (November,1968)
Research Relating to the Action of 4-Wheel Freight-Car Trucks
Trans. ASME (January,1930)
Influence of Axle Load, Track Gage, and Wheel Profile on Rail-Vehicle Hunting
J. Eng. Ind (February,1977)
The Hunting Behavior of Conventional Railway Trucks
J. Eng. Ind (May,1972)
Related Proceedings Papers
Related Chapters
Dismantling
Decommissioning Handbook
Development of New Process and Product Monitoring Technologies for the Manufacturing of High Value Alloy Steels for Use in Critical Applications
Bearing and Transmission Steels Technology
The Necessary Fine-Tuning of Process Management and Controls for Metallic Transformations during Manufacturing of Bearings: Application to M50NiL Steel
Bearing and Transmission Steels Technology