CYCLIC INELASTIC DEFORMATION AND FATIGUE RESISTANCE OF A RAIL STEEL: EXPERIMENTAL RESULTS AND MATHEMATICAL MODELS

Experimental results developed from tests of uniaxial, smooth specimens obtained from the head of an unused section of rail have been reported. Testing encompassed a broad range of conditions - monotonic tension, monotonic compression, and fully reversed constant-amplitude strain cycling. Additionally, a study of 'history effects' was made. Included in this study were tests to examine the influence of orientation, mean stress, initial prestrain, and periodic overstrain (both the cyclic deformation response and the fatigue resistance being reported for each condition). Results obtained from the above tests were used to develop mathematical models for rail deformation response and failure. Particular attention has been paid to the influence of stress state on deformation response and fatigue resistance.

• Corporate Authors:

  Battelle Columbus Laboratories

  Columbus, OH  United States 

  Federal Railroad Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142
• Authors:
  • LEIS, B N
  • Laflen, J H
• Publication Date: 1981-10

Media Info

• Pagination: 60 p.

Subject/Index Terms

• TRT Terms: Deformation; Elasticity (Mechanics); Fatigue (Mechanics); Mathematical models; Railroad tracks; Repeated loads; Steel; Structural analysis
• Subject Areas: Materials; Railroads;

Filing Info

• Accession Number: 00346746
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FRA/ORD-81/29
• Contract Numbers: DOT-TSC-1076-3
• Files: NTIS, USDOT
• Created Date: Jan 29 2002 12:00AM