Finite-Element Analysis of Discretely Supported Rail Subjected to Multiple Moving Concentrated Forces

On the basis of cubic Hermitian polynomials being used as the shape functions of a rail element and the conditions of equilibrium of forces acting in the vertical direction and of bending moment, this paper presents a method for calculating the sectional force (i.e., shear force and bending moment) of discretely supported rail subjected to multiple moving concentrated forces. The accuracy of this method is demonstrated by a comparison with the analytical solution. Two numerical examples are chosen to investigate effects of the length of rail element, stiffness and damping coefficients of railpad, and the speed of moving force on the responses of rail. Numerical results show that length of a rail element may be adopted as 2 times sleeper space; effects of the stiffness and damping coefficients of railpad on the responses of rail are significant; however, the effect of speed of moving force on the responses of rail with smooth surfaces is not significant.

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  • Authors:
    • Lou, P
    • Zhong, X-G
    • Tang, J-F
    • Zeng, Q-Y
  • Publication Date: 2006-9

Language

  • English

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Filing Info

  • Accession Number: 01042251
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 8 2007 6:19PM