Damage identity in fatigue assessment of structures

Guchinsky, Ruslan; Сидоренко, В. Г.; Petinov, S.V.

doi:10.5862/mce.61.8

Cited by 2 publications

(2 citation statements)

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“…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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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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“…However, in case of tangential stresses (e.g., details working under torsion or shear) constant component of stress cycle τ m always reduces fatigue strength of detail. Decrease of fatigue strength of safety devices destructing elements during their operation is dangerous because safety devices must be triggered (and destructing elements destroyed) at the same stable value of breaking load [1,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Approximation of limit amplitude diagram for destructive elements of safety devices

et al. 2020

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The maximum stress of the cycle should be limited not by yield strength but by tensile strength of detail material intended to be destructed. Therefore, such widespread linear approximations of Haigh diagram and conditions of Soderberg and Serensen-Kinasoshvili are not applicable for such details. Safety factor of fatigue strength of safety devices destructive elements should not exceed 1.0. Therefore, it is undesirable to use modified condition of Goodman for destructive elements. Two new variants of linear approximation of Haigh limit amplitudes diagram were developed. Both variants have proven their efficiency in design and operation of safety devices with destructive elements in framework of laboratory ‘Protection of metallurgical machines from breakdowns’ of the Chief mechanic department of PJSC ‘ILYICH IRON AND STEEL WORKS’ (Mariupol city, Ukraine).

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Damage identity in fatigue assessment of structures

Cited by 2 publications

References 0 publications

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

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

Approximation of limit amplitude diagram for destructive elements of safety devices

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