THE RESPONSE OF A SIX-AXLE LOCOMOTIVE TO RANDOM TRACK INPUT

A mathematical model, for analyzing the dynamic response of a six-axle locomotive on tangent track, is developed using a spectral analysis technique. The locomotive is represented by a thirty-nine (39) degree-of-freedom model. The excitation includes vertical and lateral random inputs. The wheel-rail interaction, based on the linear theory proposed by Wicken, Joly and Blader is considered in the model. The response spectra of a representative six-axle locomotive subject to the selected vertical and/or lateral random track irregularities is analyzed. Mean square values for displacements, velocities and accelerations, and the statistical average frequencies of the system were calculated for each degree of freedom. It is also demonstrated that probability functions for the response, can be used as a measure for the riding quality of the locomotive, and for the calculation of the probability of derailment.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 90 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00188116
  • Record Type: Publication
  • Source Agency: Association of American Railroads Technical Center
  • Report/Paper Numbers: AAR Rpt R-312 Thesis
  • Files: TRIS
  • Created Date: Feb 27 1979 12:00AM