The M-integral in fracture and damage mechanics: A review of developments and applications

Hou, Junling; Lv, Junnan; Ricoeur, Andreas; Hu, Yijie; Zuo, Hong; Chen, Yiheng; Li, Qun

doi:10.1016/j.engfracmech.2022.108741

Cited by 13 publications

(1 citation statement)

References 177 publications

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“…After inserting the crack and defining the crack growth increment, SIFs along various crack fronts were calculated at each discrete point using the M-integral method [36]. The calculation results are shown in Fig.…”

Section: Fatigue Crack Growth Analysismentioning

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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Section: Fatigue Crack Growth Analysismentioning

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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$$\varvec{J}$$-, M- and $$\varvec{L}$$-integrals of line charges and line forces

Lazar

Agiasofitou

2023

Acta Mech

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In this work, the $$\varvec{J}$$ J -, M- and $$\varvec{L}$$ L -integrals of two line charges and two line forces in generalized plane strain are derived in the framework of three-dimensional (3D) electrostatics and three-dimensional compatible linear elasticity, respectively, in order to study the interaction between them. The key point in this derivation is achieved by expressing the $$\varvec{J}$$ J -, M- and $$\varvec{L}$$ L -integrals of point charges and point forces in three dimensions in terms of the corresponding three-dimensional Green functions, that is, the three-dimensional Green function of the Laplace operator and the three-dimensional Green tensor of the Navier operator, respectively. The major mathematical tool used in deriving the $$\varvec{J}$$ J -, M- and $$L_3$$ L 3 -integrals of line charges and line forces from the corresponding $$\varvec{J}$$ J -, M- and $$\varvec{L}$$ L -integrals of point charges and point forces is the method of embedding or method of descent of Green functions to two dimensions (2D) from the corresponding Green functions in 3D. The analytical expressions of $$\varvec{J}$$ J -, M- and $$L_3$$ L 3 -integrals of line charges and line forces in antiplane and plane strain are derived and discussed. The $$\varvec{J}$$ J -integral is the electrostatic part of the Lorentz force (electrostatic interaction force) between two line charges in electrostatics and the Cherepanov force between two line forces in elasticity. The M-integral of two line sources (charges or forces) equals half the electrostatic interaction energy in electrostatics and half the elastic interaction energy in elasticity of these two line sources, respectively. The $$L_3$$ L 3 -integral of two line sources (charges or forces) is the z-component of the configurational vector moment or the rotational moment representing the total torque about the z-axis caused by the interaction of the two line sources. An important outcome is that the $$\varvec{J}$$ J -integral is twice the negative gradient of the M-integral, leading to the result that the $${\varvec{J}}$$ J -integral for line charges and line forces is a conservative force (with the corresponding interaction energy playing the role of the potential energy) and consequently an irrotational vector field. Finally, the obtained $$\varvec{J}$$ J -, M- and $$L_3$$ L 3 -integrals being functions of the distance and of the angle, are able to describe the physical behaviour of the interaction of two line sources (charges and forces), since they represent the fundamental and necessary quantities, that is, the interaction force, interaction energy and total torque produced by the interaction of these two line sources.

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Influences of magneto-electro-elastic layer properties of piezoelectric/piezomagnetic composites on dynamic intensity factors

Zhu

Hao

et al. 2023

Applied Mathematical Modelling

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The M-integral in fracture and damage mechanics: A review of developments and applications

Cited by 13 publications

References 177 publications

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

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

$$\varvec{J}$$-, M- and $$\varvec{L}$$-integrals of line charges and line forces

Influences of magneto-electro-elastic layer properties of piezoelectric/piezomagnetic composites on dynamic intensity factors

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