Weight functions, CTOD, and related solutions for cracks at notches

Jones, Rhys; Peng, Daren; Pitt, Susan; Wallbrink, Chris

doi:10.1016/s1350-6307(03)00060-8

Cited by 52 publications

(40 citation statements)

References 29 publications

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“…Other methods like weight function, Green's function, and collocation methods are also used to determine CTOD [15,16,17,18,19]. These methods may be complicated depending of the geometry and application, and have to be derived for a variety of geometries and loads.…”

Section: Introductionmentioning

confidence: 99%

Strip Yield Model Numerical Application to Different Geometries and Loading Conditions

et al. 2005

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Abstract:A new numerical method based on the strip-yield analysis approach was developed for calculating the Crack Tip Opening Displacement (CTOD). This approach can be applied for different crack configurations having infinite and finite geometries, and arbitrary applied loading conditions. The new technique adapts the boundary element / dislocation density method to obtain crack-face opening displacements at any point on a crack, and succeeds by obtaining requisite values as a series of definite integrals, the functional parts of each being evaluated exactly in a closed form.

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Section: Introductionmentioning

confidence: 99%

Strip Yield Model Numerical Application to Different Geometries and Loading Conditions

et al. 2005

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“…where, F σ is a "geometry evolution factor" and the stress intensity factor K I(Original) (a*, c*) is the value with original geometry (there no materials loss due to corrosion) obtained as per [15,16]. Here (a, c) and (a*, c*) denote the crack depths and surface crack lengths without an allowance for the loss of material due to corrosion and allowing for a reduction in the section thickness due to corrosion respectively.…”

Section: Failure Due To the Combined Action Of Corrosion And Fatiguementioning

confidence: 99%

“…Extract the stresses at the fatigue critical locations c) Use 3D, or 2D weight functions [14][15][16][17], or alternatively Trefftz function solutions [18 -20] to compute the K(a, c) solution space. Here "a" is the crack depth and "c" is the surface crack length.…”

Section: Introductionmentioning

confidence: 99%

Effect of corrosion and fatigue on the remaining life of structures and its implication to additive manufacturing

Peng

Jones²,

Berto

et al. 2018

Frattura Ed Integrità Strutturale

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ABSTRACT. This paper investigates the combined effect of corrosion and fatigue on the growth of cracks that arise from natural corrosion in steel bridges. It is shown that if these two effects need to be simultaneously analyzed. If not, then the resulting life is not conservative. Consequently, to enable a better understanding of the remaining life of steel bridges this paper presents a simple methodology for performing this coupled analysis. The implication of this study to additively manufactured Ti-6Al-4V is also discussed. KEYWORDS. Steel bridges; Corrosion; Fatigue crack growth; Remaining life.Citation: Peng., D., Jones, R., Berto, F., Razavi, S.M.J., Effect of corrosion and fatigue on the remaining life of structures and its implication to additive manufacturing, Frattura ed Integrità Strutturale, 45 (2018) 33-44.

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“…The crack analysis method used here is based on a semi-analytical method proposed by Jones et al [9]. This semi-analytical method was used to compute the stress intensity factors associated with the cracks on the design (hole) surface.…”

Section: Residual Strength Evaluationmentioning

confidence: 99%

“…For each crack around the boundary, a set of gauss points are generated on the crack face, and the stresses at these points normal to the crack plane are computed. The stresses are then used to compute the stress intensity factors around the crack front using the FAST code (for details refer to [9]). For 3D cracks, the stress intensity factor varies along the crack fronts.…”

Section: Residual Strength Evaluationmentioning

confidence: 99%