United States Department of Transportation
i
Locomotive Crash Energy Management Coupling Tests [2018]
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2018-04-18
[PDF-1.55 MB]
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Abstract:This paper describes the results of the CEM equipped
locomotive coupling tests. In this set of tests, a moving
CEM locomotive was coupled to a standing cab car. The primary
objective was to demonstrate the robustness of the PBC design
and determine the impact speed at which PBC triggering occurs.
The coupling speed was increased for each subsequent test until
the PBC triggered. The coupling speeds targeted for the test were
2 mph, 4 mph, 6 mph, 7 mph, 8 mph, and 9 mph. The coupling
speed at which the PBC triggered was 9 mph. The damage
observed resulting from the coupling tests is described. Prior to
the tests, a lumped-mass model was developed for predicting the
longitudinal forces acting on the equipment and couplers. The
test results are compared to the model predictions. Next steps in
the research program, including future full-scale dynamic tests,
are discussed.
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