RAILWAY CONTACT FORCES: COHERENCE FUNCTIONS AND MODEL VERIFICATION

A mathematical model for the dynamical responses of railway vehicles to track roughness has to be verified by experiments. This paper discusses the use of coherence functions for verification. One example of the coherence function between a lateral rail input signal and the lateral motion of a bogie is given. It is shown that important conclusions about the possibility of using experimental signals for the verification of models can be drawn from their coherence function. A simple method for model verification is the comparison of the power spectral density functions of measured and calculated signals. The accuracy of this method is investigated and illustrated with an example.

Media Info

  • Features: References;
  • Pagination: p. 500-508

Subject/Index Terms

Filing Info

  • Accession Number: 00190290
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 26 1979 12:00AM