A Co-simulation Solution for Vehicle-Track Interaction Dynamics Problems

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A co-simulation solution based on direct equilibrium of contact forces is proposed to simulate vehicle-track interaction (VTI) dynamics. It is developed in two platforms, which presents an iterative feedback loop that exchanges contact force files and structure response field in real-time. The load vector acting on the structure is described by a moving Gaussian pulse, which approximates the Dirac-delta function. Through this approach, system matrices are not exported and the additional identification of the correspondence between structure nodes and vehicle positions is avoided, which is contrary to the typical scheme in existing co-simulation methods for VTI problems. The direct information exchange in the current solution simplifies the VTI model development, making it easier for the application in track design and maintenance phase. The solution is demonstrated by a general beam model subject to a quarter car and has been calibrated and verified by benchmark cases coded in MATLAB. The example presented is a baseline model for demonstration purposes. And the proposed scheme allows for flexibility in incorporating more complex structure configurations and vehicle motions for further study.
Original languageEnglish
Title of host publicationProceedings Of The Fifth International Conference On Railway Technology
Subtitle of host publicationResearch, Development and Maintenance
Place of PublicationEdinburgh, United Kingdom
PublisherCivil-Comp Press
Number of pages7
Publication statusPublished - 2022
EventThe Fifth International Conference on Railway Technology: Research, Development and Maintenance - Montpellier, France
Duration: 22 Aug 202225 Aug 2022

Publication series

NameCivil-Comp Conferences
PublisherCivil-Comp Press
ISSN (Electronic)2753-3239


ConferenceThe Fifth International Conference on Railway Technology: Research, Development and Maintenance
Abbreviated titleRailways 2022
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • finite element method
  • iterative method
  • railway track design
  • track maintenance
  • vehicle-track interaction
  • track geometry irregularities


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