FINITE ELEMENT FRACTURE MECHANICS ANALYSIS OF TWO-DIMENSIONAL AND AXISYMMETRIC ELASTIC AND ELASTIC-PLASTIC CRACKED STRUCTURES

Improved methods for calculating fracture mechanics parameters at critical fatigue and fracture prone areas of complex structural details are summarized. This work is a part of a broader effort aimed at the development of analytical methods for fatigue and fracture analysis of submarine hulls. An approach based on the combination of high order isoparametric finite elements with a singular crack tip element is described and applied to the prediction of elastic stress intensity factor for Mode I or combined Modes I and II crack behavior. Examples of the application of the methods to two-dimensional and axisymmetric problems are presented along with recommendations for future studies and applications.

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Bethesda, MD  United States  20084

  Naval Ship Systems Command

  Washington, DC  United States 
• Authors:
  • Hilton, P D
  • Gifford, LNJ
  • Lomacky, O
• Publication Date: 1974-11

Media Info

• Pagination: 119 p.

Subject/Index Terms

• TRT Terms: Deformation curve; Finite element method; Fracture mechanics; Hulls; Mechanical elasticity; Mechanical fatigue; Numerical analysis; Plasticity; Stresses; Submarines
• Uncontrolled Terms: Stress intensity factors
• Old TRIS Terms: Fatigue stress
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00090760
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NSRDC-4493 R&D Rpt.
• Files: TRIS
• Created Date: Jun 26 1975 12:00AM