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A LOCAL GRID REFINEMENT METHOD FOR DETERMINING STRESS INTENSITY FACTORS FOR CRACKS AT NOTCHES
Author(s) -
Cardew G. E.,
Yates J. R.
Publication year - 1996
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1996.tb00987.x
Subject(s) - stress intensity factor , materials science , structural engineering , intensity (physics) , grid , stress (linguistics) , composite material , forensic engineering , geometry , fracture mechanics , engineering , mathematics , optics , physics , linguistics , philosophy
— Stress intensity calibrations have been determined for cracks at the root of a semi‐circular edge notch loaded in tension using a localised grid refinement technique for finite element analysis. The technique is of particular value in situations where a fully connected mesh model is difficult to achieve or where enhanced accuracy is needed in a small sub‐region of a model. Solutions were as accurate as those from a conventional refined mesh but with an approximately two fold reduction in run time. The resulting stress intensity factors are in good agreement with those estimated using a notch correction function and the equivalent un‐notched crack solution.