Melaku  Sisay Abebe, Hongsheng  Qiu, 
    Finite Element Dynamic Analysis of a High-Speed Train on Ballasted Track,
    Journal of Engineering and Applied Sciences,
    Volume 11,Issue 3,
    2016,
    Pages 303-310,
    ISSN 1816-949x,
    jeasci.2016.303.310,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2016.303.310)
    Abstract: The impact of dynamic loading on ballasted railway track has become an important issue due to increased demand for high-speed freight and public transport and because it leads to progressive deterioration and settlement of railway. In this study, the LS-DYNA computer code is used to conduct finite element calculations for the dynamic analysis of a high-speed train running on ballasted railway track. The rails are modelled as beams of a plastic kinematic material and the ballast and sub-ballast structure are modelled using rectangular prisms of an elastic material. The elastic beams representing the sleepers are placed 0.6 m apart.The load of a high-speed train is applied using a simplified finite element model. The commands RAIL_TRACK and RAIL_TRAIN LS_DYNA are applied to simulate the train’s interaction with the track. The CONTACT_SINGEL_SURFACE and CONTACT_SURAFCE_SURFCE commands which have not been applied in previous research are used to model the contact between connected parts. The results indicate that the LS-DYNA program can be used to model a high-speed train running on ballasted railway track and to calculate stress-strain, deformation and contact forces as well as sliding energy which are crucial for in railway track maintenance and in designing new ballasted railway track.
    Keywords: Dynamic analysis;ballasted railway;high-speed train;finite element;track