Fracture analysis of magnetoelectroelastic solid weakened by periodic cracks and line inclusions

Xiao, Junhua; Xu, Yuzhe; Zhang, Fucheng

doi:10.1016/j.engfracmech.2018.11.019

Cited by 11 publications

(1 citation statement)

References 79 publications

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“…Lei et al [33] analyzed the transient response of an interface crack in MEE bi-materials subjected to magneto-electromechanical loads. The mode III fracture problem of a weakened MEE medium by an alternating array of cracks and rigid inclusions subjected to coupling of anti-plane mechanical and in-plane electrical and magnetic stress was studied by Xiao et al [34]. As far as the authors' knowledge, there is no promising research on the transient response of multiple axisymmetric planar cracks in the transversely isotropic MEE material under in-plane magneto-electromechanical load.…”

Section: Introductionmentioning

confidence: 99%

Transient Response of an Inﬁnite Isotropic Magneto-Electro-Elastic Material with Multiple Axisymmetric Planar Cracks

Vahdati,

Salehi,

Vahabi

et al. 2024

Preprint

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Dynamic behavior of coaxial axisymmetric planar cracks in the transversely isotropic magneto-electro-elastic (MEE) material in transient in-plane magneto-electro-mechanical loading is studied. Magneto-electrically impermeable as well as permeable cracks are assumed for crack surface. In the first step, considering prismatic and radial dynamic dislocations, electric and magnetic jumps are obtained through Laplace and Hankel transforms. These solutions are utilized to derive singular integral equations in the Laplace domain for the axisymmetric penny-shaped and annular cracks. Derived Cauchy singular type integral equations are solved to obtain the density of dislocation on the crack surfaces. Dislocation densities are utilized in computation of the dynamic stress intensity factors, electric displacement and magnetic induction in the vicinity tips of crack tips. Finally, some numerical case studies of a single and multiple cracks are presented. The effect of system parameters on the results is then discussed.

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Section: Introductionmentioning

confidence: 99%

Transient Response of an Inﬁnite Isotropic Magneto-Electro-Elastic Material with Multiple Axisymmetric Planar Cracks

Vahdati,

Salehi,

Vahabi

et al. 2024

Preprint

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Non‐uniformly loaded stack of moving elastic antiplane shear cracks

Tupholme

2020

Z Angew Math Mech

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A stack of moving, non‐uniformly loaded, parallel, antiplane shear strip cracks within an isotropic elastic solid is analyzed, by exploiting an extended dislocation layer technique using moving screw dislocations. Detailed closed‐form expressions are obtained and discussed for the stress components at general points of the deformation that is created. Their variations with the polar angle near a crack tip are investigated and a neat representation of the corresponding novel, comprehensive, stress intensity factor is deduced. Illustrative numerical results are graphically presented. The occurrence of the phenomena of crack branching and crack shielding are observed for particular values of the geometrical parameters and speed of the cracks. Comparisons with some corresponding special cases are provided as validation of these more general results.

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Study on Dynamic Characteristics of Diorite Under Dry–Wet Cycle

Sun

Cui

et al. 2021

Rock Mech Rock Eng

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During the construction of tunnels in the central and western regions of China, diorite is frequently affected by vibration, blasting and water which will lead to the questions of the quality and operational safety of project. However, there are few studies on the dynamic characteristics of diorite under the action of dry-wet cycles. Therefore, this paper selected the gray-green altered diorite from Ning shan County, Shaanxi Province, China, mainly composed of plagioclase, and used the Slit Hopkinson pressure bar (SHPB) to study the effect of dry-wet cycle on the dynamic characteristics of Diorite. The test results show that the strength decay rate of the peak strength of diorite is the maximum under 1-3 dry-wet cycles, then decreases gradually. The dynamic elastic modulus of diorite dropped by 35.02% after three dry-wet cycles, accounting for 98.45% of the total attenuation. Compared the test result of three dry-wet cycles, the decrease volumes of the stress growth rate of diorite are the largest after six dry-wet cycles. Because of the actions of the dry-wet cycles, the growth rate of the rapid growth stage of the reflected energy-time history curve reduces and the growth rate of the rapid growth stage of the transmitted energy-time history curve improves. Under the action of the dry-wet cycles, the dissipation energy ratio gradually decreases, and the decrease of energy consumption density follows a negative exponential function relationship. Under the action of multiple dry-wet cycles, the tension and compression stress frequently change between the particles of rock, resulting in a significant increase of micro-cracks and an obvious degradation effect on the dynamical properties of diorite. KeywordsDry-wet cycle • Hopkinson pressure bar test • Dynamic uniaxial compressive strength • Dynamic elastic modulus • Stress growth rate • Energy analysis * Jiangbo Xu

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Fracture analysis of magnetoelectroelastic solid weakened by periodic cracks and line inclusions

Cited by 11 publications

References 79 publications

Transient Response of an Inﬁnite Isotropic Magneto-Electro-Elastic Material with Multiple Axisymmetric Planar Cracks

Transient Response of an Inﬁnite Isotropic Magneto-Electro-Elastic Material with Multiple Axisymmetric Planar Cracks

Non‐uniformly loaded stack of moving elastic antiplane shear cracks

Study on Dynamic Characteristics of Diorite Under Dry–Wet Cycle

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