MULTIAXIAL STRESS-STRAIN APPROXIMATIONS FOR NOTCH FATIGUE BEHAVIORS

The use of the fatigue notch factor k sub f Neuber's rule is shown to be identical in the elastic range to the assumption of the Hookian stress concentration factor K sub t, a multiaxial stress state, and a maximum principal strain criterion for fatigue life. The adequacy of assuming the fatigue notch factor K sub f is demonstrated for mild notches. Arguments are presented in favor of assuming a multiaxial stress state at the notch for highly constrained notches.

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Walker, E K
• Publication Date: 1977-3

Media Info

• Features: Figures; References;
• Pagination: p. 106-113
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 5
  • Issue Number: 2
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Deformation curve; Fatigue (Mechanics); Metals; Strength of materials; Stresses
• Uncontrolled Terms: Fatigue life; Stress concentration
• Old TRIS Terms: Notch strength
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00163621
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 29 1977 12:00AM