Advertisement

Modeling Rail-Vehicle Coupled Dynamics by a Time-Varying Substructuring Scheme

  • Luigi CarassaleEmail author
  • Paolo Silvestri
  • Roald Lengu
  • Paolo Mazzaron
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

The dynamic interaction between a flexible rail line and a traveling wheel can be treated in the framework of dynamic substructuring, assembling line and wheel through a moving contact point. The rail line is idealized as a continuous beam supported by the sleepers. It is discretized by the finite element method assuming the displacement and rotation of the support points as degrees of freedom. Besides, the particular solution of the static equation is included for the beam portion that is directly loaded by the moving wheel. The wheel is modelled as a dynamical system comprising two masses connected by visco-elastic devices. Following a dual assemblage approach, the equation of motion is obtained in the form of a set of linear time variant ordinary differential equations, whose unknowns are the rail line degrees of freedom, the displacement of the sprung and unsprung masses of the moving wheel and the contact rail-wheel force.

Keywords

Rail-wheel interaction Substructuring Time-variant systems 

Notes

Acknowledgements

This research was partially funded, in the IN2SMART Project, reference n. 730569, by the SHIFT2RAIL Joint Undertaking and the European Commission, within the SHIFT2RAIL Research Programme, call for members S2R-CFM-IP3-02-2016 Intelligent maintenance systems and strategies.

References

  1. 1.
    Esveld, C.: Modern Railway Track. MRT-Productions, Duisburg (1989)Google Scholar
  2. 2.
    Przemieniecki, J.S.: Theory of Matrix Structural Analysis. Dover, New York (1985)zbMATHGoogle Scholar
  3. 3.
    de Klerk, D., Rixen, D.J., Voormeeren, S.N.: General framework for dynamic substructuring: history, review, and classification of techniques. AIAA J. 46(5), 1170–1181 (2008)CrossRefGoogle Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 2020

Authors and Affiliations

  • Luigi Carassale
    • 1
    Email author
  • Paolo Silvestri
    • 1
  • Roald Lengu
    • 2
  • Paolo Mazzaron
    • 2
  1. 1.Department of Mechanical, Energy, Management and Transportation EngineeringUniversity of GenovaGenovaItaly
  2. 2.Ansaldo STSGenovaItaly

Personalised recommendations