Three dimensional finite element mixed fracture mode under anti-plane loading of a crack

Kotousov, Andrei; Berto, Filippo; Lazzarin, P.; Pegorin, F.

doi:10.1016/j.tafmec.2013.01.003

Cited by 83 publications

(50 citation statements)

References 52 publications

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“…As a result, it is hypothesized that the methodology outlined above has the potential to study the growth of small naturally occurring cracks that arise and grow form rough surfaces in Additively Manufactured Ti-6Al-4V. As an important factor in failure assessments under fatigue and static loading, 3D effect has been studied in numerous researches and 3D effects in the form of stress state have been investigated for wide variety of notch geometries under various in-plane and out of plane loading conditions by considering stress concentration factors and constraint factors throughout the thickness of the specimen [48,49]. As a representative of stress state in cracked and notched components, the variations of the stress concentration factor as a function of the thickness have been studied in some recent researches by Berto and co-researchers [50][51][52][53][54][55][56].…”

Section: Implications For Additively Manufactured Structuresmentioning

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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Section: Implications For Additively Manufactured Structuresmentioning

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

Self Cite

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“…The superscript c is usually employed for their representation. There are no coupled modes when v is zero, and the magnitude of coupled modes increases with v (Kotousov et al, 2012). It is not clear what happens when v is less than zero.…”

Section: Introductionmentioning

confidence: 95%

Corner point singularities under in-plane and out-of-plane loading: a review of recent results

Berto¹,

Pook²,

Campagnolo³

2017

10.5267/j.esm

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The linear elastic analysis of homogeneous, isotropic cracked bodies started in the 1900s. The existence of three dimensional corner point effects in the vicinity of a corner point where a crack front intersects a free surface was investigated in the late 1970s. An approximate solution by Bažant and Estenssoro explained some features of corner point effects but there were various paradoxes and inconsistencies. Results derived from finite element models showed that the analysis is incomplete. The stress field in the vicinity of a corner point appears to be the sum of two different singularities (i.e. stress intensity factors and corner point singularities). In this paper some recent results for the corner point singularities under in and out of plane loadings is reviewed and discussed.

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“…The superscript c is usually employed for their representation. There are no coupled modes when v is zero, and the magnitude of coupled modes increases with v [9]. It is not clear what happens when v is less than zero.…”

Section: Introductionmentioning

confidence: 95%

Coupled fracture modes under anti-plane loading

Pook¹,

Berto

Campagnolo

2016

Frattura Ed Integrità Strutturale

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ABSTRACT.The linear elastic analysis of homogeneous, isotropic cracked bodies is a Twentieth Century development. It was recognised that the crack tip stress field is a singularity, but it was not until the introduction of the essentially two dimensional stress intensity factor concept in 1957 that widespread application to practical engineering problems became possible. The existence of three dimensional corner point effects in the vicinity of a corner point where a crack front intersects a free surface was investigated in the late 1970s: it was found that modes II and III cannot exist in isolation. The existence of one of these modes always induces the other. An approximate solution for corner point singularities by Bažant and Estenssoro explained some features of corner point effects but there were various paradoxes and inconsistencies. In an attempt to explain these a study was carried out on the coupled in-plane fracture mode induced by a nominal anti-plane (mode III) loading applied to plates and discs weakened by a straight crack. The results derived from a large bulk of finite element models showed clearly that Bažant and Estenssoro's analysis is incomplete. Some of the results of the study are summarised, together with some recent results for a disc under in-plane shear loading. On the basis of these results, and a mathematical argument, the results suggest that the stress field in the vicinity of a corner point is the sum of two singularities: one due to stress intensity factors and the other due to an as yet undetermined corner point singularity.

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Three dimensional finite element mixed fracture mode under anti-plane loading of a crack

Cited by 83 publications

References 52 publications

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

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

Corner point singularities under in-plane and out-of-plane loading: a review of recent results

Coupled fracture modes under anti-plane loading

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