WAVE PROPAGATION, ELASTODYNAMIC STRESS SINGULARITIES AND FRACTURE

The singular part of the elastodynamic field in the vicinity of a crack tip plays an important role in fracture mechanics considerations. In this paper analytical, numerical and experimental methods to determine near-tip elastodynamic fields are reviewed, and the interpretation of stress intensity factors is discussed within the context of the fracture criterion of the balance of rates of energies. Elastodynamic effects generated by rapid propagation of the crack as well as by the diffraction of incident stress waves are considered. Propagation in the plane of the crack, as well as skew crack propagation and crack bifurcation are investigated. (Author)

• Supplemental Notes:
  • Presented at the International Congress of Theoretical and Applied Mechanics (14th).
• Corporate Authors:

  Northwestern University, Evanston

  Structural Mechanics Laboratory
  Evanston, IL  United States  60201
• Authors:
  • Achenbach, J D
• Publication Date: 1976-5

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Cracking; Dynamic modulus of elasticity; Fracture mechanics; Stresses
• Uncontrolled Terms: Crack propagation; Elastodynamic analysis; Stress intensity factors
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00147769
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NU-SML-TR-76-1 Intrm Rpt.
• Contract Numbers: N00014-76-C-0063, NSF-ENG-70-01465
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM