Research Results

Crippling Test Of An M1 Passenger Railcar

  • 31
  • Dec
  • 2014
AUTHOR: Federal Railroad Administration
KEYWORDS: Occupant volume integrity; OVI; crippling; strength; alternative criteria;
ABSTRACT: Occupied volume integrity (OVI) refers to a passenger railcar’s ability to preserve interior cabin space for passengers and crew during an accident. By preventing or minimizing structural deformation of, or intrusions into the rail vehicle's interior, passengers are better able to withstand, sustain and survive the immense forces resulting from an impact or other high magnitude event. The Federal Railroad Administration’s (FRA) Office of Research and Development (R&D) is sponsoring research to investigate OVI. The results of a series of tests have been published in an FRA report [1]. This research forms the basis for establishing alternative OVI evaluation procedures. The alternative procedures permit an analysis to be validated with data from an elastic test. The validated analysis may then be used to extrapolate the behavior of the subject car under destructive load conditions, without companion destructive testing.