THE SOLUTION OF FRACTURE MECHANICS PROBLEMS EXISTING WITH FINITE ELEMENT PROGRAMS
The finite element method is the best method available for the numerical and most of the engineering fracture mechanics problems. The finite elements programs do not give the exact results, they are idealization dependent and in fracture mechanics, dealing with singular stress/displacement fields, the effect of idealization is particularly strong. There is no direct method for the evaluation of the accuracy of the finite element calculation. Intuition or experience may help in the proper idealization of the problem, but it can be verified only by calculation performed with different idealization. In a case of enriched elements, it appears that there is an "ideal" size (not extremely large or extremely small) for a given fracture problem.
- Presented at Ttcp Meeting, Ottawa, Aug. 1980.
National Research Council of Canada1200 Montreal Road
Ottawa, Ontario Canada K1A 0R6
National Aeronautics and Space Administration600 Independence Avenue, SW
Washington, DC United States 20546
- Kacprzynski, J J
- Publication Date: 1980-5-27
- Pagination: 71 p.
- TRT Terms: Accuracy; Cracking; Elastic bodies; Elasticity (Mechanics); Finite element method; Fracture mechanics
- Uncontrolled Terms: Crack propagation
- Subject Areas: Materials; Railroads;
- Accession Number: 00328686
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: LTR-ST-1178
- Files: TRIS
- Created Date: Apr 15 1981 12:00AM