RAIL OVERTURNING

The number of train accidents increased in recent years. This may be partially attributed to the use of high speed trains and elimination of expansion joints. Derailments are among the significant causes of accident and may be caused by overturning of rail. A better understanding of rail overturning is thus a significant step toward the safe operation and adequate design of the rail system . This paper is concerned with the identification of the significant parameters affecting the instability of the rail system and an improved method of solution. In the first part, the equations governing the behavior of the system are set up. Axial loads induced by a temperature change or braking of locomotives are included in the formulation in addition to the vertical and lateral loads. The torsional and lateral stiffness of the rail, fasteners and ties are represented by means of springs. A parametric study is performed by a direct variational method to establish the values of the significant parameters. The finite element method is then applied, using the derived stiffness matrix, to obtain an accurate solution.

  • Supplemental Notes:
    • Forty-seventh Symposium on Shock and Vibration, Albuquerque, New Mexico, October 19-21, 1976.
  • Corporate Authors:

    Shock and Vibration Information Center

    Naval Research Laboratory
    Washington, DC  USA 
  • Authors:
    • Arbabi, F
  • Publication Date: 1977-9

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Filing Info

  • Accession Number: 00188091
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Part 4
  • Files: TRIS
  • Created Date: Feb 27 1979 12:00AM