Analysis of Railway Ballasted Track Stiffness and Behavior with a Hybrid Discrete–Continuum Approach
نویسندگان
چکیده
Abstract Railway ballasted track stiffness is an important indicator to identify supporting condition that ensures the facility well designed and functioned. Although many studies have been...
منابع مشابه
Investigation of the Influences of Track Superstructure Parameters on Ballasted Railway Track Design
The main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. Numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. Therefore, railway track desig...
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the track stiffness experienced by a train will vary along the track. sometimes the stiffness variation may be very large within a short distance. one example is when an unsupported sleeper is hanging in the rail. track stiffness is then, locally at that sleeper, very low. at insulated joints the bending stiffness of the rail has a discontinuity implying a discontinuity also of the track stiffn...
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Simulation of a large number of deformable bodies is often difficult because complex high-level modeling is required to address both multi-body contact and viscoelastic deformation. This necessitates the combined use of a discrete element method (DEM) and a finite element method (FEM). In this study, a quadruple discrete element method (QDEM) was developed for dynamic analysis of viscoelastic m...
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ژورنال
عنوان ژورنال: International Journal of Geomechanics
سال: 2021
ISSN: ['1943-5622', '1532-3641']
DOI: https://doi.org/10.1061/(asce)gm.1943-5622.0001941