Study of the Effects of Vibrations onto the Rails

The paper presents analytical and finite element solutions to the problem of a vibrating beam on an elastic foundation. An application example is a concrete railway sleeper embedded in an elastic medium (the ballast). The sleeper is also elastically connected to the rails. The beam (sleeper) is divided into sections where each section may or may not be supported by the elastic foundation. The elastic connections to the rails are situated at the two joinings of the three sleeper sections. Some conclusions are that Euler-Bernoulli beam theory can be used to calculate two, or maximum three, eigen frequencies of the sleeper. The foundation stiffness influences the lowest bending-mode eigen frequency the most; higher eigen frequencies are practically unaffected by the foundation stiffness. The influence of rail pad (and rail) stiffness on the sleeper eigen frequencies is negligible.

Language

  • English

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Filing Info

  • Accession Number: 01523478
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 24 2014 11:20AM