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J ‐INTEGRAL SOLUTIONS FOR SHALLOW CRACK GEOMETRIES UNDER COMBINED TENSION AND BENDING
Author(s) -
Lau C. L.,
Lee M. M. K.,
Luxmoore A. 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.tb00997.x
Subject(s) - finite element method , tension (geology) , bending , plane stress , materials science , structural engineering , pure bending , enhanced data rates for gsm evolution , work (physics) , composite material , engineering , mechanical engineering , ultimate tensile strength , telecommunications
Abstract— This paper presents J ‐integral solutions for geometries with shallow edge cracks (0.05 ≤ a/W ≤ 0.1) subjected to combined tension and bending. Tension and bending is applied simultaneously and sequentially. Curves of J versus structural strain are obtained from two‐dimensional plane strain finite element analyses using medium to low work hardening power laws to represent material behaviour. Empirical equations are derived from the finite element results to estimate the J ‐integrals, using previously developed J ‐estimation schemes for SENT and SENB specimens with only minor modifications. The predictions presented are invariably safe, but due to the complexity of the problems studied and the variability of the loadings considered, the degree of conservatism is found to be high in some cases.