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NUMERICAL PREDICTION OF FATIGUE CRACK GROWTH OF A SURFACE DEFECT
Author(s) -
Lin X. B.,
Smith R. A.
Publication year - 1995
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.1460-2695.1995.tb00159.x
Subject(s) - paris' law , materials science , finite element method , aspect ratio (aeronautics) , crack closure , structural engineering , tension (geology) , bending , crack tip opening displacement , crack growth resistance curve , surface (topology) , composite material , fracture mechanics , mechanics , geometry , engineering , mathematics , physics , ultimate tensile strength
Fatigue crack growth is modelled by an improved step‐by‐step finite element technique for a shallow and long surface crack in a finite thickness plate under different combinations of tension and bending loads. The predicted crack shape development is presented for growth through the plate thickness and the shape compared with the widely assumed semi‐elliptical profile. The predictions of the present simulation technique for the aspect ratio and the number of crack growth cycles are compared with those obtained both by Newman and Raju's method, and experimental results for aspect ratio changes taken from the literature.