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- W59426190 abstract "The paper presents some key points of multi-criteria optimum design of an embedded rail structure (ERS) such as numerical modelling of track behaviour, choice of optimality criteria, formulation of an optimisation problem. The optimality criteria are based on the requirements to railway tracks related to cost efficiency of the design, minimum noise emission and minimum wear of rails and wheels. The design variables comprise the material and geometry properties of ERS, namely elastic properties and volume of compound, shape of rails and size of troughs. The static and dynamic behaviour of embedded rail structure is analysed using the finite element software ANSYS and RAIL. The multi-criteria optimisation problem is solved using preference coefficient approach. The optimisation is performed by a numerical technique that uses multipoint approximations based on the response surface fitting (MARS method). Starting from a conventional embedded rail structure, two designs of ERS suitable for high-speed operations have been obtained. Because of the multi-criteria nature of the problem the solutions depend on the preferences for the optimal design. The results of the optimisation are presented and discussed in the paper. For the covering abstract see ITRD E125214." @default.
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- W59426190 date "2000-01-01" @default.
- W59426190 modified "2023-09-23" @default.
- W59426190 title "Optimum design of embedded rail structure for high speed lines" @default.
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