Journal ArticleDOI
Singular behaviour at the end of a tensile crack in a hardening material
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In this paper, a total deformation theory of plasticity, in conjunction with two hardening stress-strain relations, is used to determine the dominant singularity at the tip of a crack in a tension field.Abstract:
D istributions of stress occurring at the tip of a crack in a tension field are presented for both plane stress and plane strain. A total deformation theory of plasticity, in conjunction with two hardening stress-strain relations, is used. For applied stress sufficiently low such that the plastic zone is very small relative to the crack length, the dominant singularity can be completely determined with the aid of a path-independent line integral recently given by rice (1967). The amplitude of the tensile stress singularity ahead of the crack is found to be larger in plane strain than in plane stress.read more
Citations
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Reactor pressure vessel structural integrity research
W.E. Pennell,W.R. Corwin +1 more
TL;DR: In this paper, the authors used elastic-plastic finite element analyses of the crack-tip stress fields to assess the safety of irradiation embrittled nuclear reactor pressure vessels (RPVs) containing flaws.
Journal ArticleDOI
Hydrogen effect on fracture toughness of thin film/substrate interfaces
TL;DR: In this article, the effect of hydrogen on the interface fracture toughness of two nano-film/substrate structures, Ni/Si and Cu/Si, were evaluated using four-point bend specimens with and without hydrogen charging.
Journal ArticleDOI
Analysis of the effect of micro-crack on the plastic strain ahead of main crack in aluminium alloy 2024 T3
B. Bachir Bouiadjra,Mohamed Benguediab,M. Elmeguenni,M. Belhouari,Boualem Serier,M. Nait Abdel Aziz +5 more
TL;DR: In this article, the effect of micro-cracks near a main crack on the variation of the shape and the size of the plastic zone ahead of the main crack for small scale plasticity in aluminium alloy 2024 T3 was analyzed.
Journal ArticleDOI
The in‐plane and out‐of‐plane stress constraint factors and K‐T‐Tz description of stress fields near the border of a quarter‐elliptical corner crack
TL;DR: In this article, the elastic T-stress and stress intensity factor K for quarter-elliptical corner cracks have been investigated in elastic plates by detailed three-dimensional finite-element calculations.
Journal ArticleDOI
Improved Prediction Method for Estimating Notch Elastic-Plastic Strain
R. Adibi-Asl,R. Seshadri +1 more
TL;DR: In this paper, the estimation of stress and strain using the conventional NSSC rules, by considering the entire relaxation locus during the inelastic action, is proposed, on the basis of local effects, net section collapse and the reference stress.
References
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Book
The mathematical theory of plasticity
TL;DR: In this paper, the solution of two-dimensional non-steady motion problems in two dimensions is studied. But the solution is not a solution to the problem in three dimensions.
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Numerical Solution of Ordinary and Partial Differential Equations
Journal ArticleDOI
Local yielding and extension of a crack under plane stress
G.T Hahn,A. R. Rosenfield +1 more
TL;DR: In this article, the size of locally yielded regions, the stress distribution, and displacements attending a crack in tension under plane stress have been calculated by extending the work of Dugdale and others.
Journal ArticleDOI
Contained plastic deformation near cracks and notches under longitudinal shear
TL;DR: In this paper, an exact linear elastic-perfectly plastic solution for the problem of sharp notch (or, when the notch angle is zero, a crack) in a plane of finite width subjected to anti-plane stresses inducing a stress and deformation state of longitudinal shear is presented.
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