Technical Reports

User's Manual for Program CONWHEEL (CONformal WHEEL-rail Contact Stress Problems): Technical Report No.10

  • 01
  • Mar
  • 1982
AUTHOR: B. Paul, S. Singh
OFFICE: RPD
REPORT NUMBER: FRA/ORD-82/36
SUBJECT: Track/Train Interactions
KEYWORDS: Rail-Wheel Interaction, Contact Stress, Conformal Contact, Elasticity, NonHertzian Contact, Computer Program
ABSTRACT: CONWHEEL (CONformal WHEEL-rail contact stress problems) is an all FORTRAN computer program for the solution of normal contact stresses between two closely conforming (possibly nonHertzian) smooth elastic bodies. It can be used to determine: the boundary of the interface contact region; pressure distribution; stress within the critical subsurface region. CONWHEEL is a much enhanced version of an earlier program CONFORM. The important changes include: (1.) Calculation of subsurface stress and location of critically stressed points; (2.) The rail and wheel profiles may now be specified either from engineering drawings (as before); or from tabulated offsets for the wheel and rail profiles (new); (3.) The need to run two preliminary programs has been eliminated, resulting in a significantly reduced amount of user effort; (4.) No FORTRAN coding or subroutine preparation is required of the user; and (5.) CONWHEEL is approximately 2.5 times the size of CONFORM, but is much more convenient to work with. This manual includes: a brief description of the method of analysis, program structure, instructions for problem modelling, input preparation, and solution of sample problems.
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