Finite Element Fracture Mechanics Analysis of Two-Dimensional and Axisymmetric Elastic and Elastic-Plastic Cracked Structures.
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1974
- Accession Number
- ADA005880
Entities
People
- L. Nash Gifford Jr.
- Oles Lomacky
- Peter D. Hilton