Designers of rail hump yards traditionally execute a long, tedious manual process to optimally design hump grades and retarder placements. This design process entails checking the velocities and headways of a worstcase sequence of cars to ensure that proper values of these variables can be maintained on the gradient. The computer simulation model PROFILE automatically computes these quantities and thus frees the designer from tedious work and allows him or her to generate and study more design alternatives. The model uses the usual static (velocity-independent) rolling- resistance formulation of car rollability but includes the option of using velocity-dependent rolling resistance. User input requirements and program-generated output are described, and an example of the application of the model to a typical design problem is given.

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 52-58
  • Monograph Title: Railroad track and facilities
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00319311
  • Record Type: Publication
  • ISBN: 0309030528
  • Files: TRIS, TRB
  • Created Date: Dec 11 1980 12:00AM