Abstract
Although the dynamic behavior of straight sections of railway tracks has been studied analytically, numerically and experimentally over the last decades by several researchers, this subject remains of current interest. In this paper, the authors have presented a more comprehensive numerical study to analyze the dynamic response of a conventional ballasted track with mono-block sleepers and three different types of non-ballastled railway tracks in the frequency domain while taking into account the actual profile of the rail. This latter has been rarely considered in previous studies, and has generally been simplified into a rectangular section or I-profile in the majority of preceding studies. The study is conducted using the finite element analysis software ANSYS, and the numerical results are compared to those obtained in a previous study to ensure their accuracy. The effect of some parameters of the Direct Fixation Fastener (DFF) track type on frequency response is also discussed; these include the fastener spacing and the stiffness of the fasteners. The results show that the frequency response of the DFF track is very sensitive to the variation of these parameters, particularly to the variation of the fastener spacing.
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Hajar, R., Ayoub, Z., Abdellatif, B.A., Mounia, A. (2023). Numerical Investigation into the Vertical Dynamic Behavior of Railway Tracks. In: Kacprzyk, J., Ezziyyani, M., Balas, V.E. (eds) International Conference on Advanced Intelligent Systems for Sustainable Development. AI2SD 2022. Lecture Notes in Networks and Systems, vol 712. Springer, Cham. https://doi.org/10.1007/978-3-031-35251-5_3
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DOI: https://doi.org/10.1007/978-3-031-35251-5_3
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