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Stress intensity factors for surface cracks in single‐edge notch bend specimen by a three‐dimensional weight function method
Author(s) -
Zhao X C,
Wu X R,
Newman J C,
Tong D H
Publication year - 2016
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/ffe.12458
Subject(s) - stress intensity factor , structural engineering , weight function , enhanced data rates for gsm evolution , finite element method , materials science , tension (geology) , range (aeronautics) , intensity (physics) , function (biology) , stress (linguistics) , surface (topology) , composite material , geometry , engineering , mathematics , mathematical analysis , optics , physics , compression (physics) , telecommunications , linguistics , philosophy , evolutionary biology , biology
Stress intensity factors for half‐elliptical surface cracks at a semi‐circular notch in a recently developed single‐edge notch bend specimen are determined for a wide range of geometrical parameters using a three‐dimensional weight function method. Two load cases of pin loading and uniform remote tension are considered. The results are in good agreement with abaqus/franc3d finite element analysis. It is found that the Ziegler–Newman engineering similitude approach (programmed into the Fatigue Crack Growth Structural Analysis life‐prediction code) produces good results for a wide range in a / c ratios. Expressions by multi‐variable curve fitting to the weight function results are presented for easy engineering applications.