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原文传递 Tank Car Operating Environment Study-Phase I.

题名：	Tank Car Operating Environment Study-Phase I.
作者：	koch, k.
关键词：	tank cars,rail transportation/railroad cars, strain gages, accelerometers, couplers, forces, impact tests, shock(mechanics), correlation, transducers, environmental effects, testing/stub sills
摘要：	This report documents the results of controlled testing conducted during the first phase of a tank car operating environment program involving the Association of American Railroads, the Railway Supply Institute (formerly the Railway Progress Institute), the Federal Railroad Administration, and Transport Canada. Strain gages, accelerometers, and an instrumented coupler were installed on a stub sill tank car during this phase of testing. This car was then subjected to a series of tests applying a range of forces to the coupler. These included the application of controlled vertical forces, car-to-car impact tests, and a short duration over-the-road test. Results showed that significant correlation could be established between strain gage output and output from the instrumented coupler. This indicates the strong possibility that longitudinal and vertical coupler forces can be inferred only from the output from four strain gages installed on the stub sill. Results also showed a correlation between accelerometer output (in the form of a shock response spectrum (SRS)) and peak longitudinal coupler forces, especially for impact forces above 400,000 pounds. This indicates a possibility that SRS values from only two accelerometers can be used to infer the magnitude of peak coupler forces that occur during yard impacts. During Phase II of this investigation, this transducer system will be tested under standard in-service conditions to further prove the concept and usefulness towards establishing tank car coupler force operating environment profiles. / Supplementary Notes: Sponsored by Federal Railroad Administration, Washington, DC. Office of Railroad Development. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
报告类型：	科技报告