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Optimization of an embedded rail structure using a numerical technique

  • Markine, V.L. (author)
  • De Man, A.P. (author)
  • Esveld, C. (author)
Publication Date
Jan 01, 2000
TU Delft Repository
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This paper presents several steps of a procedure for design of a railway track aiming at the development of optimal track structures under various predefined service and environmental conditions. The structural behavior of the track is analyzed using a finite element model in which the track and a moving train are incorporated. Parameters of the optimum track are determined by applying a numerical optimization technique. The optimization method employed here uses Mutipoint Approximations based on Response Surface fitting (MARS). To demonstrate the robustness of the procedure, it is applied to a problem of optimal design of an innovative railway track for high-speed trains - a so-called Embedded Rail Structure. Requirements for the optimal design are related to the wear of the rails and wheels and the level of acoustic noise produced by a moving train. To obtain the optimal design, component dimensions and mechanica properties of the track are varied. Results of the optimization are presented and discussed. / Railway Engineering / Civil Engineering and Geosciences

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