Numerical prediction based on XFEM for mixed-mode crack growth path and fatigue life under cyclic overload

Chen, Zhiying; Bao, Hongchen; Dai, Yanwei; Liu, Yinghua

doi:10.1016/j.ijfatigue.2022.106943

Cited by 26 publications

(12 citation statements)

References 49 publications

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“…Ahmed Bahloul [5] conducted a fatigue crack growth life prediction study for 7075-T6 aerospace aluminum alloy and confirmed the significance of the stress intensity factor as a contributing factor to component failure; Zhiying Chen [6] employed the extended finite element method (XFEM) to numerically predict crack propagation paths and fatigue life under cyclic loading. The study validated the accuracy of the calculated stress intensity factor and crack expansion； Zhang Qi [7] proposed a reliability analysis of hyperbolic circular gear contact strength using a combination of the kriging model and the first second-order method.…”

Section: Introductionmentioning

confidence: 94%

Reliability analysis of structures containing cracks based on kriging model

Liao,

Zhang,

Zhang

2023

Preprint

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The fatigue reliability of structural elements with penetration cracks under stress loading is analysed using the Kriging model. The model is established using the “FEM + M integral” stress intensity factor modelling method, and the reliability of the numerical modelling is determined by comparing the theoretical and simulated values of the stress intensity factor. A kriging probability model is established, and the reliability of the cracked structure is obtained based on the mean point method and the Monte Carlo method. The influence law of the statistical characteristics of the random parameters on the reliability of crack containment specimens is investigated. It is concluded that the stress P is the most sensitive to the influence of the reliability of the cracked structure, followed by the crack length a, and the plate width W is the least sensitive to the influence of the reliability.

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Section: Introductionmentioning

confidence: 94%

Reliability analysis of structures containing cracks based on kriging model

Liao,

Zhang,

Zhang

2023

Preprint

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“…It has been widely used to study complicated crack growth or propagation [39][40][41][42][43]. Chen et al [44] simulated the mixed-mode crack propagation problem. In superconducting fractures, Chen et al [45] investigated the fracture behavior of GdBCO bulk superconductors under strong electromagnetic forces.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the mechanical and electrical properties of (RE)BCO tapes with multiple edge cracks

Gao

2023

Supercond. Sci. Technol.

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One of the leading causes of critical current degradation in (RE)BCO tapes is the micro-cracks produced by mechanical slitting. These cracks are scattered near the edge of the tape and vary in length and angle. In this work, a tape model with multiple edge cracks is established. Under tensile loading, the effects of the Poisson ratio, crack length, crack angle, crack spacing, and geometric mutation between cracks on the stress intensity factor are investigated using the extended finite element method (XFEM). Tensile experiments were conducted at room temperature to investigate the crack propagation behavior of tapes with multiple edge cracks. The results show that the stress intensity factor obtained using XFEM is more informative than the analytical solution, which ignores the Poisson effect. The stress intensity factor is sensitive to crack length and angle variations and exhibits an evident jump characteristic when a geometric mutation occurs. The jump level strongly depends on the geometric difference. The jump location is the initiation site for crack propagation, which is consistent with the experiment results. The strain analysis of the tape implies that high-strain regions exist at the crack tip before the tensile strain reaches the irreversible strain limit. The critical strain of crack propagation is closely related to the form of crack distribution. It dominates the irreversible strain limit of critical current degradation, which facilitates understanding the early degradation of critical current. Finally, some engineering suggestions are given.

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“…Despite the wide improvement in rotating machinery analysis, the difficulty of measuring deformation and vibration, and monitoring crack growth is not negligible. Thus, compared to time-consuming and high-cost experimental methods [4], numerical simulation methods, in particular the finite element method (FEM), are economical and powerful tools that have been proven to provide information about deformation, blade vibrations, and investigating fatigue crack growth. Several studies have been conducted on the numerical analysis of rotating machinery blades.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Crack Growth and Fatigue Life of an Axial Fan Blade Based on a Co-Simulation Approach

Hassen,

Fakhari,

Mrad

2023

Advances in Materials Science

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This paper presents static and dynamic stress analyses of an axial fan blade, which were carried out under real-life centrifugal and aerodynamic loading conditions using the Abaqus software. The location of the crack was identified on the pressure side of the blade at the conjunction between the blade and the blade root. It reveals a high agreement between the predicted location of stress distribution and the real origin of the crack location. Furthermore, a fracture mechanics criterion was adopted to simulate fatigue crack growth. This was performed using a fracture analysis FRANC3D code for three-dimensional problems. As a result, the calculated stress intensity factors (SIFs) were presented for the first steps, and the fatigue life of the fan blade was evaluated using the Forman de Koning model at different stress ratios.

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Numerical prediction based on XFEM for mixed-mode crack growth path and fatigue life under cyclic overload

Cited by 26 publications

References 49 publications

Reliability analysis of structures containing cracks based on kriging model

Reliability analysis of structures containing cracks based on kriging model

Numerical analysis of the mechanical and electrical properties of (RE)BCO tapes with multiple edge cracks

Assessment of Crack Growth and Fatigue Life of an Axial Fan Blade Based on a Co-Simulation Approach

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