Analytical and Experimental Determination of Nonlinear Wheel-Rail Constraint Relationships

Wheel/rail geometric constraint relationships, such as the effective conicity and gravitational stiffness, strongly influence the lateral dynamics of railway vehicles. In general, these geometric constraints are nonlinear functions of the wheelset lateral displacement. This report describes the development and validation of an analytical procedure to determine these nonlinear functions for arbitrary wheel and rail profiles. Data for validation of this analysis were obtained experimentally. Experimental and analytical data for three validation cases are presented. Results of a limited parametric study are also reported. The computer program for the analytical procedure is described and documented.

• Record URL:
  https://railroads.dot.gov/elibrary/analytical-and-experimental-determination-nonlinear-wheelrail-geometric-constraints
• 
• Supplemental Notes:
  • Title on cover: Analytical and Experimental Determination of Nonlinear Wheel/Rail Geometric Constraints.
• Corporate Authors:

  Clemson University

  Department of Mechanical Engineering
  Clemson, SC  United States  29631

  Arizona State University, Tempe

  Department of Mechanical Engineering
  Tempe, AZ  United States  85281

  Federal Railroad Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Association of American Railroads Research Center

  3140 South Federal Street
  Chicago, IL  United States  60616
• Authors:
  • Cooperrider, N K
  • Law, E H
  • Hull, R
  • Kadala, P S
  • Tuten, J M
• Publication Date: 1975-12-30

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Interim Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 184p

Subject/Index Terms

• TRT Terms: Computer programs; Gravitational force; Railroads; Rolling contact; Validation; Wheelsets (Railroads)
• Candidate Terms: Rail profiles
• Uncontrolled Terms: Conicity; Experimental data; Geometrics; Lateral displacement; Lateral dynamics; Wheel profiles
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 01637775
• Record Type: Publication
• Report/Paper Numbers: FRA-OR&D-76-244
• Contract Numbers: DOT-OS-40018
• Files: TRIS, ATRI, USDOT
• Created Date: May 10 2017 12:35PM