Fatigue analysis of cruciform welded joint with weld penetration defects

Shin, Wang-Sub; Chang, Kyong-Ho; Muzaffer, Shazia

doi:10.1016/j.engfailanal.2020.105111

Cited by 28 publications

(6 citation statements)

References 34 publications

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“…In the IIW recommendation and the DNV standard, the S-N curve is found according to the type of weld; however, the location of the crack initiation is not studied. In [25,31], fatigue FE results were compared with the HSS method, the DNV GL, and the IIW recommendation, which confirmed that the fatigue FE method was a more reliable method to calculate fatigue life and crack initiation than HSS. Furthermore, the 3D fatigue FE analysis results and the experimental results were the same, which confirmed that our method was quite a reliable method to calculate fatigue life.…”

Section: Comparison Of Fatigue Fea Results and Iiw Dnv Standardmentioning

confidence: 74%

“…In light of this, 3D finite element analysis has become a hot topic of late due to the fact that 3D finite element analysis can deal with these adverse conditions. Three-dimensional finite element analysis has been widely used to predict various effects, such as welding residual stresses, welding deformations, and fatigue loads on structures [25][26][27][28][29][30][31][32][33][34]. These analyses can be employed to predict the safety and economy of a structure prior to its construction.…”

Section: Fe Welding Analysis Proceduresmentioning

confidence: 99%

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Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

et al. 2023

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The construction of new renewable energy infrastructures and the development of new ocean resources continues to proceed apace. In this regard, the increasing size and capacity of offshore wind turbines demands that the size of their accompanying supporting marine structures likewise increase. The types of marine structures utilized for these offshore applications include gravity base, monopile, jacket, and tripod structures. Of these four types, monopile structures are widely used, given that they are comparatively easy to construct and more economical than other structures. However, constant exposure to harsh cyclic environmental loads can cause material deterioration or the initiation of fatigue cracks, which can then lead to catastrophic failures. In this paper, a 3D fatigue finite element analysis was performed to predict both the fatigue life and the crack initiation of a welded monopile substructure. The whole analysis was undertaken in three steps. First, a 3D non-steady heat conduction analysis was used to calculate the thermal history. Second, a thermal load was induced, as an input in 3D elastoplastic analysis, in order to determine welding residual stresses and welding deformation. Finally, the plastic strain and residual stress were used as inputs in a 3D fatigue FE analysis in order to calculate fatigue crack initiation and fatigue life. The 3D fatigue finite element analysis was based on continuum damage mechanics (CDM) and elastoplastic constitutive equations. The results obtained from the 3D fatigue finite element analysis were compared with hot spot stresses and Det Norske Veritas (DNV-GL) standards.

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Section: Comparison Of Fatigue Fea Results and Iiw Dnv Standardmentioning

confidence: 74%

Section: Fe Welding Analysis Proceduresmentioning

confidence: 99%

Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

et al. 2023

Self Cite

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“…The type of fillet welded cruciform joint is commonly used in the construction of long spanned bridges with improved design and higher weld quality. However, the existence of geometrical discontinuities such as cracks and porosity in addition to metallurgical nonuniformities, which lead to crack initiations from different positions that can be difficult to detect [40]. he local strain energy density SED approach is one of such modern methods, currently used in the evaluation of fatigue.…”

Section: Materials and Modelsmentioning

confidence: 99%

“…The eigenvalues  1 can be derived from the case of crack  1 =0.5 [39]. The values for this are already listed in the literature for different important 2α [40]. strain field, Poisson's ratio and the notch opening angle 2α.…”

Section: Materials and Modelsmentioning

confidence: 99%

Investigation fatigue crack initiation and propagation cruciform welded joints by extended finite element method (XFEM) and implementation SED approach

Djeloud

Moussaoui

Kellai

et al. 2022

Frattura Ed Integrità Strutturale

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This study has used the strain energy density (SED) approach to evaluate the stress intensity factor (SIF) of cracked cruciform welded joints in Hardox 450 steel. A microstructural analysis was made of Hardox 450 steel which is composed of refined and tempered low carbon martensite. The obtained results of simulation will be compared with those provided by J-integral methode for different enriched zones and contours based on the extended finite element method (XFEM) coupled with the level set technique (LST). Crack initiation and propagation under cyclic loading have been adopted for the modeling of cruciform welded joints.

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“…[1][2][3] As shown in Figure 1, fatigue performance is affected by several factors (material type, service environment, temperature, stress range, residual stress, weld defects, weld geometry, plate thickness, stress ratio, welding method, joint type, loading type, etc.). [4][5][6][7][8][9][10][11][12][13][14][15][16][17] In addition, the mechanism of fatigue fracture contains a large number of nonlinear relationships and the influencing factors (IFs) that are difficult to describe quantitatively. Additionally, welding is one of the most commonly used connection methods in engineering, and the fatigue fracture generally originates from welded joints.…”

Section: Introductionmentioning

confidence: 99%

A State‐of‐Art Review on Prediction Model for Fatigue Performance of Welded Joints via Data‐Driven Method

Feng

Zhao

et al. 2023

Adv Eng Mater

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Fatigue fracture of welded joints is an important cause for engineering accidents. Due to the coexistence of so many influencing factors, the current prediction model of fatigue behavior cannot be used for all service conditions. The progress of each module (database establishment, data processing, data augmentation, dimension reduction, and comprehensive consideration of influencing factors) during the process of constructing a prediction model is summarized herein. Specifically, the state‐of‐art prediction models of fatigue strength, fatigue crack growth rate, fatigue life, and fatigue reliability are introduced. Moreover, suggestions for future work are given at the end of each section. Finally, according to the influential prediction methods, the establishment of fatigue performance prediction methods of welded joints via data‐driven method is summarized.

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Fatigue analysis of cruciform welded joint with weld penetration defects

Cited by 28 publications

References 34 publications

Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

Fatigue Life and Crack Initiation in Monopile Foundation by Fatigue FE Analysis

Investigation fatigue crack initiation and propagation cruciform welded joints by extended finite element method (XFEM) and implementation SED approach

A State‐of‐Art Review on Prediction Model for Fatigue Performance of Welded Joints via Data‐Driven Method

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