Strain Energy Density Prediction of Mixed-Mode Crack Propagation in Functionally Graded Materials

Benamara, Nabil; Boulenouar, Abdelkader; Aminallah, Miloud

doi:10.3311/ppme.9682

Cited by 10 publications

(2 citation statements)

References 27 publications

(33 reference statements)

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“…Benamara and al. 5 employed the strain energy density (SED) criterion and the displacement extrapolation technique, to study the crack growth in FGMs, under mixed mode loading. Dimitri and al.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Modelling of Mixed Mode Crack Initiation and Growth in Functionally Graded Materials

Chafi

Boulenouar

2019

Mat. Res.

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The main objective of this work is to present a numerical modeling of crack propagation path in isotropic functionally graded materials (FGMs) under mixed-mode loadings. The displacement extrapolation technique (DET) and the maximum circumferential stress (MCS) criterion are investigated in the context of crack growth in functionally graded beam subject to three and four bending conditions. Using the Ansys Parametric Design Language (APDL), the variation continues of the material properties are incorporated by specifying the material parameters at the centroid of each finite element (FE) and the crack direction angle is evaluated as a function of stress intensity factors (SIFs) at each increment of crack extension. In this paper, two applications are investigated using an initial crack perpendicular and parallel to material gradient, respectively. The developed approach is validated using available numerical and experimental results reported in the literature.

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Section: Introductionmentioning

confidence: 99%

A Numerical Modelling of Mixed Mode Crack Initiation and Growth in Functionally Graded Materials

Chafi

Boulenouar

2019

Mat. Res.

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“…Through the use of parameters that are set at the center of gravity of each element, this technique integrates continual fluctuations in material properties. Analyses of crack propagation in FGMs under mixed-mode loading subjected to mechanical loads using the strain energy density (SED) approach and the finite element method (FEM) are performed(Benamara et al 2017) (Dag et al 2009(Mete et al 2021).…”

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confidence: 99%

FEM analysis of thermomechanical effects on stress intensity factors

Abdelghani,

Kebir,

Benguediab

et al. 2024

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The response of a material to thermo-mechanical loading depends on its thermal and mechanical properties. Some materials may exhibit significant thermal expansion, meaning they expand significantly when heated, while others may be stiffer and show little thermal expansion. To evaluate the behavior of a material or structure subjected to thermo-mechanical loading, advanced analysis and modeling techniques are used, such as finite element modeling. These methods make it possible to predict deformations, stresses and possible failure problems that may occur under the effect of thermo-mechanical loading. In the present paper, assuming that the thermal regime was steady, the effects of thermo-mechanical loads on the stress intensity factor in a 2D cracked plate of functional gradient material (FGM) are examined. The analyzes the effects of thermo-mechanical loads on the stress intensity factor in a 2D cracked plate of functionally gradient material is a complex problem and generally requires advanced modeling and simulation approaches, such as the finite element method. The plate has a crack on the edge and is made of FGM (titanium-zirconia). Analyses are performed for different imposed temperature values, using the Newman’s conditions. The problem is solved using a newly created USDFLD subroutine in the ABAQUS program. In this routine, functionally graded material property variations follow an exponential law function in the plate with cracks. Stress intensity factors are calculated using the J-integral, taking into consideration the variation in properties at the crack tip. Effects of temperature and relative crack length on stress intensity factors were evaluated. The stress intensity factor values obtained by the finite element method (FEM) modeling shows that there is a good correlation with the results obtained in other studies.

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Computational and Experimental Methods to Investigate Fracture Behavior of Functionally Graded Material Structures—A Critical Review

Bhandari

Purohit

2021

Lecture Notes in Mechanical Engineering

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Strain Energy Density Prediction of Mixed-Mode Crack Propagation in Functionally Graded Materials

Cited by 10 publications

References 27 publications

A Numerical Modelling of Mixed Mode Crack Initiation and Growth in Functionally Graded Materials

A Numerical Modelling of Mixed Mode Crack Initiation and Growth in Functionally Graded Materials

FEM analysis of thermomechanical effects on stress intensity factors

Computational and Experimental Methods to Investigate Fracture Behavior of Functionally Graded Material Structures—A Critical Review

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