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Simulation of Vertical Dynamic Vehicle–Track Interaction – Comparison of Two- and Three-Dimensional Models

  • Emil AggestamEmail author
  • Jens C. O. Nielsen
  • Niklas Sved
Conference paper
  • 7 Downloads
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

By using an extended state-space vector approach, the vertical dynamic vehicle–track interaction between a railway vehicle and a slab track is simulated in the time domain. Both two- and three-dimensional track and vehicle models are considered. In the two-dimensional track model, the rail, panel and roadbed are modelled using Rayleigh–Timoshenko beam elements. In the three-dimensional track model, the rails are modelled using Rayleigh–Timoshenko beam elements, whereas the panel and roadbed are modelled by 3D brick elements. Based on Python scripts, the parameterised three-dimensional track model is developed in Abaqus, from which the system matrices are exported to Matlab where the dynamic analysis is performed. In the presented numerical examples, similarities and differences between the two models are discussed, and it is highlighted in what scenarios the different models are feasible to employ.

Keywords

Slab track Dynamic vehicle–track interaction Ballastless track Simulation Vehicle–track coupled dynamics 

Notes

Acknowledgement

Parts of the study have been funded within the European Union’s Horizon 2020 research and innovation programme in the project In2Track2 under grant agreement No. 826255.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Department of Mechanics and Maritime SciencesChalmers University of TechnologyGothenburgSweden
  2. 2.Sweco Civil ABÖstersundSweden

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