AN IMPROVED NUMERICAL METHOD FOR COUNTERFORMAL CONTACT STRESS PROBLEMS. TECHNICAL REPORT NO. 3

A numerical method is given for the solution of frictionless counterformal contact stress problems. By modifying the previously described simply-discretized method, and by introducing an automatic mesh generating procedure for the changing contact region, it has been possible to make major improvements in the generality, stability, accuracy, and efficiency of the numerical procedures. The method has been verified by comparison with known solutions for the Hertzian case. Numerical examples for non-Hertzian cases include the first known solution for non-Hertzian contact of a railroad wheel and rail. The mesh generation and boundary iteration procedure introduced is applicable to a wider class of problems with changing boundaries, such as determination of wheel-rail adhesion-slip boundary, determination of elastic-plastic interfaces for residual stress problems, etc.

  • Corporate Authors:

    University of Pennsylvania, Philadelphia

    Department of Mechanical Engineering and Applied Mechanics
    Philadelphia, PA  United States  19104

    Federal Railroad Administration

    Office of Research and Development, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Paul, B
    • Hashemi, J
  • Publication Date: 1977-7

Media Info

  • Pagination: 66 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00186076
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FRA/ORD-78/26, MEAM-77-1
  • Contract Numbers: DOT-OS-60144
  • Files: NTIS, TRIS, USDOT
  • Created Date: Dec 29 1979 12:00AM