SKEW CRACK PROPAGATION UNDER STRESS-WAVE LOADING

An elastodynamic explanation is offered for propagation of a crack out of its plane (skew crack propagation), under stress-wave loading. A two-dimensional geometry is considered. An unbounded body containing a crack is subjected to a suddenly applied antiplane line load, which generates a stress wave. By employing analytical results for the intensity factors, the conditions for skew crack propagation at the instant that the crack is struck, is investigated, on the basis of the balance of rates of energies. A speed of crack propagation above which skewing can be expected is derived.

• Supplemental Notes:
  • This work was sponsored by the Office of Naval Research, Structural Mechanics Program, Department of the Navy, Arlington, Virginia 22217.
• Corporate Authors:

  Northwestern University, Evanston

  Department of Civil and Environmental Engineering
  2145 Sheridan Road
  Evanston, IL  United States  60208
• Authors:
  • Achenbach, J D
• Publication Date: 1974-9

Media Info

• Features: References;
• Pagination: 6 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: 00080058
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: NU-SML TR No. 75-1 Intrm Rpt.
• Contract Numbers: N00014-67A-0356-0034
• Files: TRIS
• Created Date: May 1 1975 12:00AM