National Technical Reports Library - NTRL

National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.




Details
Actions:
Download PDFDownload PDF
Download

Users' Manual for Asymmetric Wheel/Rail Contact Characterization Program.


PB279707

Publication Date 1977
Personal Author Heller, R.; Cooperrider, N. K.
Page Count 108
Abstract Wheel/rail geometric constraint relationships, such as the effective conicity and gravitational stiffness, strongly influence the lateral dynamics of railway vehicles. The principal curvatures of wheel and rail profiles are important parameters in the determination of creep coefficients used in rail vehicle models. In general, these geometric constraints and profile curvatures are nonlinear functions of the wheelset lateral displacement. This report is a users' manual for a computer program written in Fortran IV that uses iterative procedures to determine these nonlinear functions for arbitrary wheel and rail profiles. The program computes the wheel/rail contact positions, geometric constraint functions, and profile curvatures for any given wheel profile, rail profile, rail cant angle, and rail gauge for an asymmetric wheelset on asymmetric rails. Analytical methods used and program input and output are described. Results are in the form of printout, punched cards and drum plotter plots. The users' manual includes program listings, sample deck set-ups, and sample run output.
Keywords
  • Railroad tracks
  • Vehicle wheels
  • Rolling contact loads
  • Rolling friction
  • Fortran
  • Computer programs
  • User needs
  • Rail wheel interaction
  • WHRAILA computer program
  • Fortran 4 programming language
Source Agency
  • Federal Railroad Administration
NTIS Subject Category
  • 85C - Metropolitan Rail Transportation
  • 85I - Railroad Transportation
Corporate Authors Arizona State Univ., Tempe. Dept. of Mechanical Engineering.; Clemson Univ., S.C. Dept. of Mechanical Engineering.; Federal Railroad Administration, Washington, D.C. Office of Research and; Association of American Railroads, Chicago, Ill. Technical Center.
Supplemental Notes Prepared in cooperation with Clemson Univ., S.C. Dept. of Mechanical Engineering and Association of American Railroads, Chicago, Ill. Technical Center.
Document Type Technical Report
NTIS Issue Number 197816
Contract Number
  • DOT-OS-40018
Users' Manual for Asymmetric Wheel/Rail Contact Characterization Program.
Users' Manual for Asymmetric Wheel/Rail Contact Characterization Program.
PB279707

  • Railroad tracks
  • Vehicle wheels
  • Rolling contact loads
  • Rolling friction
  • Fortran
  • Computer programs
  • User needs
  • Rail wheel interaction
  • WHRAILA computer program
  • Fortran 4 programming language
  • Federal Railroad Administration
  • 85C - Metropolitan Rail Transportation
  • 85I - Railroad Transportation
  • DOT-OS-40018
Loading