FRACTURE MECHANICS ANALYSIS OF CENTERED AND OFFSET FASTENER HOLES IN STIFFENED AND UNSTIFFENED PANELS UNDER UNIFORM TENSION

This report documents a finite-element analysis procedure for computation of Mode I and Mode II stress intensity factors associated with one or two sharp cracks emanating from a fastener hole in a panel under uniform tension. The fastener hole may be offset from the panel centerline, and one or both edges of the panel may be integrally stiffened. The formulation of a special assumed-stress hybrid element for the region near the fastener hole is presented. A detailed description of the programming covers the physical problem, modelling, program flow and options, input/output conventions, execution times, and limitations which must be observed. Results are presented for performance tests of the special element, and for some example analyses of cracked panels.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Aeroelastic and Structures Research Laboratory
    Cambridge, MA  USA  02139
  • Authors:
    • STALK, G
    • Orringer, O
  • Publication Date: 1976-4

Media Info

  • Pagination: 185 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00146988
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: ASRL-TR-177-2 Intrm Rpt., AFFDL-TR-75-70
  • Contract Numbers: F33615-74-C-3063
  • Files: TRIS
  • Created Date: Feb 16 1977 12:00AM