Fatigue and fracture of cylindrical and spherical shells containing a through crack and subjected to internal pressure or torsion are considered. The stress intensity factor ratios giving the effect of curvature are obtained as functions of a dimensionless shell parameter. By using the conventional plastic strip model the plastic zone size around the crack tip and the crack opening displacement are calculated. The calculated COD values are shown to be in good agreement with the experimental results. The fracture criterion of critical COD is verified by using the results of the burst tests in titanium and aluminum alloy cryogenic pressure vessels. Modified fatigue crack propagation models taking into account the bending effect in shells are introduced and are applied to the analysis of experimental data obtained from flat plates, and cylindrical shells under axial tension, internal pressure, and torsion. Finally, the paper includes the effect of humidity on the crack growth rate and the effect of load biaxiality on the rupture strength.

  • Corporate Authors:

    North-Holland Publishing Company

    Box 211
    1000AE Amsterdam,   Netherlands 

    North Holland Publishing Company

    68-70 N.Z. Voorburgwal, Box 103
    Amsterdam C,   Netherlands 
  • Authors:
    • Erdogan, F
    • Ratwani, M
  • Publication Date: 1972

Media Info

  • Features: References;
  • Pagination: p. 265-286
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00046625
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Sep 27 1973 12:00AM