Journal
VEHICLE SYSTEM DYNAMICS
Volume 59, Issue 10, Pages 1533-1556Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00423114.2020.1769847
Keywords
Vehicle-track interaction; sleeper finite element; frequency response function
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Funding
- National Natural Science Foundation of China [51820105014, 51708558, 51578549, 51678576]
- National Key R&D Program of China [2017YFB1201204]
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This study focuses on the influence of sleeper finite element types on system dynamic responses in the context of vehicle-track interaction. The model's effectiveness has been validated through both frequency- and time- domain analysis in the numerical study. Investigation has been conducted on the effects of sleeper finite element type, sleeper support stiffness, and damping coefficient on system responses.
In the framework of vehicle-track interaction, this work puts an emphasis on clarifying the influence of sleeper finite element types on system dynamic responses. Three sleeper element types, namely the rigid-body, extensible Euler-Bernoulli beam and solid element are used respectively in the track system modelling with detail mathematical formulations presented. The rails are modelled as Timoshenko beams. The ballasted track system is subject to a moving vehicle with coupled wheel-rail interactions. From aspects of both frequency- and time- domain analysis in the numerical study, the effectiveness of this model has been validated. The influences of the sleeper finite element type, the sleeper support stiffness and damping coefficient on the system responses have been investigated.
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