Influence of the non-singular stress on the crack extension and fatigue life

Chen, Cheng; Récho, Naman; Niu, Zhongrong

doi:10.1016/j.nucengdes.2012.03.017

Cited by 12 publications

(7 citation statements)

References 46 publications

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“…Pluvinage [33] proposed averaging the stress distribution over the entire process volume to establish more accurate fracture criteria. Introduction of a length scale parameter in crack growth criteria was successively used to predict the crack initiation or to take the non-linear mechanisms into account for crack growth [34][35][36][37][38][39]. The principal advantage of this class of theories resides in their accuracy and simplicity.…”

Section: Introductionmentioning

confidence: 99%

A non-local approach to crack process modeling in ceramic materials subjected to thermal shock

Song

Jiang

2015

Engineering Fracture Mechanics

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Section: Introductionmentioning

confidence: 99%

A non-local approach to crack process modeling in ceramic materials subjected to thermal shock

Song

Jiang

2015

Engineering Fracture Mechanics

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“…Figure 8A,B compares the predictions of the proposed model with the experimental findings and numerical results reported by Ma et al 65 and also the numerical predictions of Sajith et al 24,66 and Cheng et al 67 in terms of crack growth rate and fatigue life diagram, respectively.…”

Section: Materials Propertiesmentioning

confidence: 65%

“…The predictions of the proposed method are compared with experimental and numerical results provided by Ma et al 65 and also with numeric previsions achieved by Sajith et al 24,66 and Cheng et al 67 …”

Section: Numerical Resultsmentioning

confidence: 80%

“…In the present study, for conciseness, the fatigue behavior of the CTS steel specimen is analyzed for the cases of Φ ¼ 30 and Φ ¼ 60 only. In particular, according to Ma et al, 65 The predictions of the proposed method are compared with experimental and numerical results provided by Ma et al 65 and also with numeric previsions achieved by Sajith et al 24,66 and Cheng et al 67 Concerning numerical results, it is worth noting that Ma et al 65 and Sajith et al 24,66 have used standard FEbased numerical models, which update the computational mesh of the numerical model for each increment of the crack length during the propagation process. In particular, for the case of Φ ¼ 30 , Sajith et al 24 report that the crack propagation process has been conducted by extending the crack through incremental steps of size Δa ¼ 0:5 mm starting from the initial crack length of 45 mm to the final length of 65 mm.…”

Section: Case 1: the Fatigue Behavior Of A Cts Steel Specimenmentioning

confidence: 94%

“…The fatigue behavior of a CTS steel specimen: a comparison between the proposed method, the experimental findings and numerical results reported by Ma et al, 65 and the numerical predictions of Sajith et al 24,66 and Cheng et al 67…”

Section: Case 2: Fatigue Life Estimation Of a Holed Platementioning

confidence: 99%

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Fatigue crack growth simulation using the moving mesh technique

Ammendolea,

Greco,

Leonetti

et al. 2023

Fatigue Fract Eng Mat Struct

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This work proposes a finite element (FE)‐based numerical model that uses the moving mesh technique for simulating fatigue crack propagation phenomena inside material components subjected to cyclic loads. Precisely, the computational mesh is adjusted during the numerical simulation according to conditions dictated by the criteria of fracture mechanics. Unlike standard FE procedures, which perform remeshing for each increment of the crack length, the proposed model updates the computational mesh only when FEs are distorted excessively because of the mesh nodes' motion, thus reducing computational burdens considerably. The validity of the proposed method is assessed through comparisons with existing experimental and numerical results.

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On the second non-singular stress term of the V-notch solution: a new engineering solution

2013

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The non-singular stress terms are expressed by means complex eigenvalues and their corresponding complex coefficients for a number of sharp V-notches with varying notch opening angles. According to the literature the complex part of the solution introduces in the stress field equations an oscillatory function depending also on the logarithm of the radial distance from the notch tip. The intensity of the non-singular term depends on two parameters contrary to the conventional representation of the singular term the intensity of which is expressed by the notch stress intensity factor (NSIF). The aim of this paper is to investigate whether the stress field and the strain energy density can be described with sufficient accuracy by the real part of the Williams’ solution, neglecting the complex part of the eigenvalue and the corresponding complex coefficient. This engineering proposal strongly simplifies the problem allowing to define a real, unique, nonsingular NSIF (Hns) which governs the intensity of the non-singular part of the stress field

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Influence of the non-singular stress on the crack extension and fatigue life

Cited by 12 publications

References 46 publications

A non-local approach to crack process modeling in ceramic materials subjected to thermal shock

A non-local approach to crack process modeling in ceramic materials subjected to thermal shock

Fatigue crack growth simulation using the moving mesh technique

On the second non-singular stress term of the V-notch solution: a new engineering solution

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