A Finite Element Model for the Lateral Strength of Railroad Track Structures
A superelement for the nonlinear lateral deformation of railroad track structures under arbitrary thermal and/or mechanical loads has been developed. The finite element program is capable of accepting any linear or nonlinear lateral and longitudinal ballast resistance properties and any fastener torsional resistance properties. Pre- and post-buckled track deformations can be calculated for arbitrary initial imperfections. Results agree well with published experimental results.
KeywordsFinite Element Program Initial Imperfection Torsional Spring Track Structure Thermal Buckling
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- 2.Kerr, A.D., “Lateral Buckling of Railroad Tracks Due to Constrained Thermal Expansions - A Critial Survery,” Proc. Symp. on Railroad Track Mechanics, Pergamon Press, 1975, pp. 141–169.Google Scholar
- 3.Kerr, A.D., “Thermal Buckling of Straight Tracks; Fundamentals, Analyses, and Preventive Measures,” U.S. Department of Transportation, Report No. FRA/0RD-78/49, September 1978, p. 58.Google Scholar
- 4.Langhaar, H.L., Energy Methods in Applied Mechanics, John Wiley & Sons, Inc., New York, 1962.Google Scholar
- 5.Mallet, R.H., and Marcal, P.V., “Finite Element Analysis of Nonlinear Structures,” ASCE J. of the Structural Div., Vol. 94, No. ST9, Sept. 1968.Google Scholar
- 7.Kish, A., and Samavedam, G., “Recent Investigations on the Lateral Stability of CWR Track,” U.S.Dept. of Trans.Google Scholar