Fatigue of Fillet-welded Joint Assessment by the FEA Simulation of Damage Accumulation

Guchinsky, Ruslan; Petinov, S.V.

doi:10.5862/mce.22.5

Cited by 8 publications

(8 citation statements)

References 5 publications

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“…Considered approach is based on the damage accumulation technique proposed by Glinka et al and Ellyin et al , which later became widespread, e.g. for the two‐dimensional fatigue cracks modelling . The main advantage of this approach is that the crack initiation and propagation stages are not separated and considered as a single process controlled by the gradual damage accumulation.…”

Section: Fatigue Estimation Methodologymentioning

confidence: 99%

“…for the two-dimensional fatigue cracks modelling. 22 The main advantage of this approach is that the crack initiation and propagation stages are not separated and considered as a single process controlled by the gradual damage accumulation. It is not necessary to have the initial defect for the crack nucleation; local material heterogeneity can be a crack source.…”

Section: Finite Element Modellingmentioning

confidence: 99%

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Comparison of fatigue life assessment by analytical, experimental and damage accumulation modelling approach for steel SAE 1045

Imran

Siddique

Guchinsky

et al. 2016

Fatigue Fract Eng Mat Struct

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Fatigue life assessment for two‐phase steel SAE 1045 has been carried out by experimental and simulation techniques. Analytical approach, termed as fatigue lifetime calculation, was employed making use of a load increase testing procedure and constant amplitude tests equipped with measurement techniques – plastic strain amplitude, change in temperature and change in electrical potential difference. The predicted fatigue life has been validated by constant amplitude tests and compared with fatigue life estimation by microstructure‐based simulation. Simulation has been carried out over the complete cross section of the specimen. The simulation uses damage accumulation in the gage section of the specimen culminating in the macro‐crack propagation, taking into account the inhomogeneous fatigue resistance of the material element. The results show that at the initial intervals of high cycle fatigue range at relatively higher stress amplitudes, the experimental and simulation results are in agreement; whereas in the (high cycle fatigue) region at relatively low stress amplitudes, the simulation results were found more optimistic and the corresponding fatigue scatter is also increased. Each scatter is attributed to the relatively small number of analysed models of the material structure. Scanning electron microscope was used to determine volume fraction of the microstructure for simulation. Fatigue fracture surface analysis shows that crack initiated from internal defect of material and crack propagation is driven by silicon oxide inclusion.

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Section: Fatigue Estimation Methodologymentioning

confidence: 99%

Section: Finite Element Modellingmentioning

confidence: 99%

Comparison of fatigue life assessment by analytical, experimental and damage accumulation modelling approach for steel SAE 1045

Imran

Siddique

Guchinsky

et al. 2016

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…There are few studies on this aspect, especially on the interface influence coefficient. A review of the literature revealed that many metal materials and composite materials conform to a Weibull distribution (Cao et al, 2004;Han and Ga, 2019;Wang T. S. et al, 2022;Wang Z. J. et al, 2022;Wu, 2022) and a lognormal distribution (Zeng and Yu, 1991;Wang et al, 2019) in a fatigue damage stage (Guchinsky and Petinov, 2011;Petinov et al, 2016). Therefore, damage variable factor D is introduced in this paper and assumed to be a function related to interface displacement.…”

Section: Introductionmentioning

confidence: 99%

Damage softening model and behavior of reinforced soil interface based on the Weibull distribution

Guo

Zheng

et al. 2023

Front. Built Environ.

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A damage-softening model for a reinforced soil interface is proposed based on the trilinear model of a reinforced soil pullout interface, aiming at the softening phenomenon of the geogrid reinforced soil interface during the pullout process and considering the damage softening of the reinforced soil interface during the pullout process. The damage variable factor D is introduced, and it is assumed that D is a function of the interface displacement. The two-parameter Weibull distribution function is used to express the damage evolution law of the reinforced soil interface. Based on the basic control equation of the reinforced soil interface, the calculation model of the stress state of the geogrid at different stages under the pullout load is deduced. To verify the accuracy and applicability of the model, the prediction results of the model are compared with the test results and the ideal elastic–plastic model, hyperbolic model, elastic–exponential softening model, and the damage softening model based on a lognormal distribution function proposed in this paper. The distribution of interfacial shear stress is studied, and the influence of parameters at each stage is analyzed. The results show that in the elastic stage, with the increase of shear stiffness, the maximum shear stress at the interface increases, and the curvature of the curve also increases, while the elastic modulus is the opposite. In the softening stage, with the increase of softening length, the peak value of the curve moves to the free end. In the residual stage, the shear stress increases from the drawing end to the free end and tends to the residual stress. The research results are in accordance with the actual situation and can be applied to reinforced soil engineering.

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“…They suggested that it be used to examine the onset of cracks in cavities and the progress of cracks in the joint of discontinuous T-Bar profiles [15]. The starting point of the crack is a hole and a three-dimensional shape, and its development is simulated and enters the plastic elastic region of the weld metal until complete failure of the weld occurs [16]. Performed fatigue tests in three methods and the plate's direction with a welded joint are under bending load [17].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Fatigue Durability in Bending Effect on Welded Joints in Steel Profiles

Petrudi¹,

Kiasat²,

Fadavi³

et al. 2021

Metall Mater Eng

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Ships are always prone to fatigue through high periodic loads, usually caused by waves and changing load conditions. So, fatigue is an important factor in design. One of the reasons for fatigue in welding parts is variable bending loads. In this paper, a specimen of low-carbon steel T-Bar profiles is used, along with plates of the same type of steel that have been welded by the manual electrode welding process. To determine the distribution of static and dynamic forces created by welding, the specimens were subjected to bending (three-point loading) and tensile tests, and finally fatigue tests. The T-Bar Steel profile has more tolerance for fatigue loads than welded. The load T-Bar profile has not failed until the two million cycles, while the welding specimen has failed in about 3×105 cycles. Finally, strong penetrating welds should be used if a stronger welding joint is required.

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Fatigue of Fillet-welded Joint Assessment by the FEA Simulation of Damage Accumulation

Cited by 8 publications

References 5 publications

Comparison of fatigue life assessment by analytical, experimental and damage accumulation modelling approach for steel SAE 1045

Comparison of fatigue life assessment by analytical, experimental and damage accumulation modelling approach for steel SAE 1045

Damage softening model and behavior of reinforced soil interface based on the Weibull distribution

Experimental Study of Fatigue Durability in Bending Effect on Welded Joints in Steel Profiles

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