Finite Element Elastic-Plastic Analysis of Cracks.
Final rept. 1 Feb 74-1 Feb 78,
GEORGIA INST OF TECH ATLANTA SCHOOL OF ENGINEERING SCIENCE AND MECHANICS
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This is a summary of research performed in the areas a development of two-dimensional hybrid finite element procedures to calculate stress intensity factors corresponding to general r to the minus alpha stress singularities in isotropic as well as anistropic materials b study of the convergence of the assumed displacement hybrid finite element procedure in fracture mechanics problems c development of a three-dimensional hybrid finite element procedure to calculate the elastic combined mode stress-intensity factors K1, K2 and K3 that vary along an arbitrarily curved three-dimensional crack front d hybrid finite element solutions of fundamental three-dimensional crack problems e development of a two-dimensional finite element procedure for analyzing plane problems of fracture involving large-scale yielding conditions and under cyclic loading f study of the J-integral as a ductile fracture initiation condition g studies of finite deformation effects near the crack-tip h analysis of stable crack growth under rising load and study of criteria for loss of stability of growth in ductile materials and i elastic-plastic analysis of effects of crack closure on fatigue crack growth rates. Author
- Numerical Mathematics