On the basis of the 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 article 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 correctness of the present method is illustrated by a comparison with the analytical solution. Two numerical examples are chosen to investigate the effects of the length of rail element, the stiffness and damping coefficients of railpad, and the speed of moving force on the responses of rail. The numerical results show that the length of a rail element may be adopted as two times sleeper space; the effect of the stiffness and damping coefficients of railpad on the responses of rail is significant; however, the effect of the speed of moving force on the responses of rail with smooth surface is not significant.
Finite-element analysis of discretely supported rail subjected to multiple moving concentrated forces
2006-05-01
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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