A&met-The paper deals with the &rite element computation of the crack closure integrals (CCIs) and the stress intensity factors (SIFs) under mechanical and/or thermal loadings, which give rise to forces at nodes close to a crack tip region. Four examples are presented to illustrate the usefulness of
Fracture criteria and stress intensity factors including the effect of crack closure
β Scribed by Kang Y. Lee; Sunder H. Advani
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 369 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0013-7944
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β¦ Synopsis
Two-and three-dimensional thermo-mechanical failure criteria, including the effects of crack/cavity closure, are developed in terms of thermal and mechanical loading by extending the work of McClintock and Walsh. General 2-and 3-D fracture criteria in terms of soley stress intensity factors are developed and it is shown that they are expressed in the single relation, (k2/k2c)2+ kt/ktc = 1, on the basis of Grittith theory and fracture mechanics. General expressions of stress intensity factors in 3-D crack problems under arbitrary thermo-mechanical loading with the effect of crack closure are also deduced.
π SIMILAR VOLUMES
The relation between diffusion behavior of hydrogen atoms and crack branching in delayed failure was discussed. The hypotheses that diffusion paths of hydrogen atoms at crack tip broaden with increase of stress intensity factor K, and that crack branching occurs when hydrogen atoms diffuse through
Plates with centraI through cracks subjected to bending is analysed taking into account the closure of ihe crack faces on the compression side. A r~ee-dimension finite element method emplo~g t~ee~~ensjon~ degenerate SOB element is used for the amdysis. The crack faces have been mode&d such that they