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- W431875268 abstract "Passengers’ comfort in terms of acoustic noise levels is a key design driver for train design. The problem is especially relevant for high speed trains, where the aerodynamic induced noise is dominant, but it is also important for medium speed trains where the mechanical sources of noise may have more influence. The numerical interior noise prediction inside the train is a very complex problem, involving many different parameters: complex geometries and materials, different noise sources, com-plex interactions among those sources, broad range of frequencies where the phenomenon is important, etc. In this paper, the main findings of this work developed at IDR/UPM (Instituto de Microgravedad “Ignacio Da Riva”, Universidad Politecnica de Madrid) are presented, concentrating on the different modelling methodologies used for the different frequency ranges of interest, from FEM-BEM models, hybrid FEM-SEA to pure SEA models. The advantages and disadvantages of the different approaches are summarized. Different modelling techniques have also been evaluated and compared, taking into account the various and specific geometrical configurations typical in this type of structures, and the material properties used in the models. The critical configuration of the train inside a tunnel is studied in order to evaluate the external loads due to noise sources of the train. In this work, a SEA-model composed by periodic characteristic sections of a high speed train is analysed inside a tunnel." @default.
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- W431875268 date "2013-01-01" @default.
- W431875268 modified "2023-09-25" @default.
- W431875268 title "Trade-off aproaches for the vibroacoustic analysis of trains" @default.
- W431875268 hasPublicationYear "2013" @default.
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