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FINITE ELEMENT MODELLING OF FATIGUE CRACK SHAPES
Author(s) -
Gilchrist M. D.,
Smith R. A.
Publication year - 1991
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.1460-2695.1991.tb00691.x
Subject(s) - breakout , finite element method , coalescence (physics) , paris' law , structural engineering , materials science , crack closure , mechanics , fracture mechanics , engineering , physics , finance , astrobiology , economics
This paper describes a versatile finite element technique which has been used to investigate the fatigue growth and stability of a wide range of structural defects of practical importance. The procedure automatically remeshes the three‐dimensional finite element model during the stages of crack growth. Problems analysed to date include the subsurface and breakout growth of internally initiated elliptical defects, the growth of semi‐elliptical surface cracks in leak‐before‐break situations, the development of quarter‐elliptical corner defects, the interaction and coalescence of two adjacent coplanar semi‐elliptical surface defects and the fatigue growth of a defect in a round bar.