Technical Reports

Advanced Cushioning Devices for Freight Locomotives

  • 25
  • Jul
  • 2016
AUTHOR: Federal Railroad Administration
OFFICE: RPD
SUBOFFICE: RPD-32
REPORT NUMBER: DOT/ORD/FRA-16/27
KEYWORDS: Freight locomotives, crash energy management system, collisions, system design, system analysis
ABSTRACT: This report describes the design and analysis of an advanced cushioning device for freight locomotives. The device, or crash energy management system, minimizes the risk of locomotive override in the event of an in-line collision. As part of the system, energy dissipative elements integrated with locomotive structures reduce the speed over a portion of impact. In doing so, the overall post-impact kinetic energy is reduced, and the locomotive remains on the rails for a longer duration following collision. Controlling the deformation in the front end eliminates the formation of a ramp that will allow the locomotive front-wheels to climb over the impacted car wheels.

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