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.
David Taylor Naval Ship R&D CenterBethesda, MD USA 20084
Naval Ship Systems CommandWashington, DC USA
- Hilton, P D
- Gifford, LNJ
- Lomacky, O
- Publication Date: 1974-11
- Pagination: 119 p.
- TRT Terms: Deformation curve; Elasticity (Mechanics); Fatigue (Mechanics); Finite element method; Fracture mechanics; Hulls; Numerical analysis; Plasticity; Stresses; Submarines
- Uncontrolled Terms: Stress intensity factors
- Old TRIS Terms: Fatigue stress
- Subject Areas: Marine Transportation; Materials;
- 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