Double crack growth analysis in the presence of a bi-material interface using XFEM and FEM modelling

Nasri, K.; Abbadi, M.; Zenasni, M.; Ghammouri, M.; Azari, Z.

doi:10.1016/j.engfracmech.2014.07.016

Cited by 22 publications

(8 citation statements)

References 26 publications

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“…Some studies about multiple crack fracture behavior under static loading have been performed in different rock-like materials either by numerical simulation, [18][19][20][21][22][23] by experiment [24][25][26][27][28] or by combining both of them. [29][30][31][32][33] Nasri et al 22 used the extended finite element method to analysis the interaction effect between two cracks under tensile load, but experimental study was not carried out due to the limitation of experimental technology. Yin et al 27 studied the coalescence behavior of two parallel pre-existing surface cracks in granite under compression.…”

Section: Introductionmentioning

confidence: 99%

“…In the study of the fracture mechanism of multiple cracks under static loads, some researchers used cubic or rectangular specimens containing two or three cracks under compression, [19][20][21][22][24][25][26][27][28]30 and some researchers used Brazilian disc specimens under compression. 29,[31][32][33] However, for multiple cracks under dynamic loading, no mature configuration specimen is available, and the corresponding experimental study under dynamic load, such as impact and blast, have little achievements.…”

Section: Introductionmentioning

confidence: 99%

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The effect of a pre‐existing crack on a running crack in brittle material under dynamic loads

Zhou

Zhu

Wang

et al. 2019

Fatigue Fract Eng Mat Struct

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Brittle material usually contains plenty of cracks or micro‐cracks, which raises a question that how a pre‐existing crack affects a running crack as they are approaching. In order to investigate such issue, impact experiments were conducted by using double crack semi‐circle (DCSC) specimens. Polymethyl methacrylate (PMMA) was selected to make the DCSC specimens, and a modified SHPB system was used to perform the impact tests. The finite difference code AUTODYN was employed to simulate the crack propagation behavior and propagation path, and the simulated crack paths agree well with the impact test results. Meanwhile the stresses around the crack tips were analyzed and the crack propagation direction was investigated. To calculate the crack dynamic stress intensity factors (DSIFs), finite element code ABAQUS was employed. The results show that the spacing D between the vertical crack tip and the inclined crack center affects the stress distribution and fracture behavior of the vertical crack largely. As the vertical crack approaches the inclined crack, the crack speed is slow down, and tensile stress appears at the inclined crack tip. As the spacing D is small than 50 mm, the vertical crack connects with the middle area of the inclined crack. As the spacing D is 50 mm, the vertical crack connects with either the middle area or the upper tip of the inclined crack. As the spacing D is larger than 50 mm, the vertical crack coalesces with the upper crack tip.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of a pre‐existing crack on a running crack in brittle material under dynamic loads

Zhou

Zhu

Wang

et al. 2019

Fatigue Fract Eng Mat Struct

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“…[1][2][3] For multiple crack propagation, the double crack growth is studied by extended finite element method. 4,5 Also, the interference effect of the double crack was investigated experimentally. 6 Based on the peridynamics theory, an analysis of the collinear double cracks containing the initial defect was conducted.…”

Section: Introductionmentioning

confidence: 99%

Double cracks with single-inclusion fatigue propagation of surface-quenched large modulus rack

Cheng

Shi

Liu

et al. 2019

Advances in Mechanical Engineering

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A connectivity criterion based on the analysis of the stress intensity factor for the double cracks and inclusion was developed to study the residual life of large modulus crack. Applying the moving load, the finite element model in FRANC3D was proposed to study the variation law of the spacing ratio [Formula: see text] and stress intensity factor amplification coefficient [Formula: see text]. Also, the spacing ratio threshold and the initial spacing threshold for the law of propagation of the double cracks and inclusion were obtained. After the analysis of the threshold, the initial equivalent single crack [Formula: see text] was obtained based on the function [Formula: see text] and stress intensity factor for circular mode I crack [Formula: see text]. The final equivalent single crack [Formula: see text] was obtained by innovative use of the fatigue load cycle correction coefficient [Formula: see text]. Moreover, the residual fatigue life of surface-quenched large modulus rack is analyzed to be 55 years. It is revealed that the design of the large modulus crack is safe for the normal operation of the Three Gorges Shiplift.

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“…Therefore, nowadays, the extended finite element method (XFEM) which reduces the computational time and cost and enhances the accuracy of the results, is widely implemented to model and analyze cracked structures. 12–14…”

Section: Introductionmentioning

confidence: 99%

“…In other research, Nasri et al. 13 used XFEM to analyze the effect of interaction between two cracks in the case of a mono-material, namely the zinc coating. The computation was then performed for a galvanized zinc/Trip steel 800 bi-material and compared to a material with a softer substrate (aluminum).…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of adhesively bonded composite patch repair of cracked aluminum panels with concept of CZM and XFEM

Talebi

Abedian

2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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Application of composite patches in repair of damaged/aged aircraft structures is one of the most popular repairing methods in aerospace engineering. Since running experiments are difficult, time consuming, expensive, and also require high level of expertise, simulation of the behavior of the patch and also the faulty components after repair can assist designers and engineers in optimization of their designs. In this article, full-scale simulation of a damaged panel that is experimentally repaired with a composite patch will be considered using ABAQUS, a commercial finite element code. The crack growth process is modeled with the extended finite element method and the cohesive zone model (CZM) is used to model the progressive damage in the adhesive of the composite patch repair. Also, sensitivity analysis is performed on the CZM parameters and it is shown that the three parameters i.e. the shear toughness, maximum first shear traction, and penalty parameter for the elastic stiffness are important in the simulation of adhesively bonded composite patch repairs. The calibrated cohesive properties are successfully used to predict the response of the composite patch to the strengthened in damaged structure with considering the linear and nonlinear stage of failure process. The simulation results obtained in different stages have been verified with the existing experimental results.

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Double crack growth analysis in the presence of a bi-material interface using XFEM and FEM modelling

Cited by 22 publications

References 26 publications

The effect of a pre‐existing crack on a running crack in brittle material under dynamic loads

The effect of a pre‐existing crack on a running crack in brittle material under dynamic loads

Double cracks with single-inclusion fatigue propagation of surface-quenched large modulus rack

Numerical modeling of adhesively bonded composite patch repair of cracked aluminum panels with concept of CZM and XFEM

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