On the mixed-mode crack propagation in FGMs plates: comparison of different criteria

Benamara, Nabil; Boulenouar, Abdelkader; Aminallah, Miloud; Benseddiq, Noureddine

doi:10.12989/sem.2017.61.3.371

Cited by 8 publications

(2 citation statements)

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“…Benamara and al. 12 examined the effect of inclusions and cavities on the crack trajectories in FGMs, using the minimum strain energy density (MSED) and maximum circumferential stress (MCS) criteria. Rousseau and Tippur 13 performed experimental and numerical investigations on crack growth in an epoxy/ glass FGM beam subjected to four-point bending.…”

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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“…Nabil vd. [12], iki boyutlu FK plakanın karmaşık modlu çatlak analizini SEM'den yararlanarak gerçekleştirmişlerdir. Yıldırım [13] içerisinde kenar çatlağı bulunduran FK plakalarda meydana gelen ısıl şok kırılmalarını SEM kullanarak incelemiştir.…”

Section: Giriş (Introduction)unclassified

Investigation of fracture behaviour of one-dimensional functionally graded plates by using peridynamic theory

KAYA>

OLMUŞ

Dördüncü

2022

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Composite materials are widely used in aerospace, military, and nuclear engineering fields due to their desirable properties such as lightness and high strength. The mismatch of the stiffness at the interfaces between distinct materials results in a stress concentration; thus, crack nucleation and inter-layer separations can be observed. The concept of functionally graded materials (FGMs) aims to achieve a structure whose material properties continuously vary in one or more coordinate directions. This continuous variation is obtained for the material properties of the FG structure.This situation provides a way to minimize the stress concentrations which may occur at the interfaces between the two different materials. FGMs are one of the most important structures in defense and aerospace industries owing to their superior properties. In order to design FG structures safely, it is very crucial to understand and investigate possible damages under different loads to increase the reliability of these structures. Since structural testing and analysis techniques may be costly, there is a necessity to use improved and accurate computational tools to predict the deformation and stress fields of the FG structures. Numerical modeling of the fracture and damage in FGMs remains a formidable challenge in computational mechanics due to the non-symmetric material variations in the FGMs. In PeriDynamic (PD) theory, the equations of classical continuum mechanics (CCM) are reformulated by replacing the derivatives with volumetric integral expressions. Hence, the equilibrium equations of PD theory are still valid even if the material includes a discontinuity, unlike CCM. In this study, the influence of the material variations in the FG plates on the crack nucleation and propagation is investigated by means of PD theory. As a result of the analysis, it is observed that the material distributions have an evident effect on the fracture behaviour of the plate, and the plate strength can be increased by tailoring the material properties in the FG plates.

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A peridynamic approach for modeling of two dimensional functionally graded plates

Dördüncü

OLMUŞ

Rabczuk

2022

Composite Structures

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On the mixed-mode crack propagation in FGMs plates: comparison of different criteria

Cited by 8 publications

References 0 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

Investigation of fracture behaviour of one-dimensional functionally graded plates by using peridynamic theory

A peridynamic approach for modeling of two dimensional functionally graded plates

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