22 Result(s)
within
Yong-dong Li
Engineering
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Article
Valley Hall edge solitons in honeycomb lattice with an armchair-type domain wall
Thanks to the topological protection, photonic topological edge states can move along the edges of photonic crystals without radiating into the bulk or reflecting when encountering disorders or defects. The va...
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Article
Concentrated force-induced fracture of a multiferroic composite cylinder
Although the cracking problems of multiferroic structures have been widely investigated, concentrated force-induced fracture still remains as an un-fully explored failure mode that has considerable significanc...
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Article
Effects of the volume fraction of piezoelectric particles in the magneto-electro-elastic interfacial region on the fracture behavior of a laminate multiferroic plate
Magneto-electro-elastic (MEE) interfacial regions may be formed in multiferroic composites consisting of alternate piezoelectric (PE) and piezomagnetic layers during the hot-pressing process. The existence of ...
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Article
Multiple parallel cracks in a magnetoelectroelastic strip under in-plane magnetic/electric field and clam**-induced antiplane pre-deformation
Many magnetoelectroelastic devices are mechanically clamped during service, and the clam** may lead to pre-deformation, which will in return affect the magnetoelectroelastic behavior. In the present paper, a...
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Article
Coupled interfacial imperfections and their effects on the fracture behavior of a layered multiferroic cylinder
An interfacial imperfection coupling model is proposed to characterize the imperfect interface in a bi-layered multiferroic cylinder by extending the generalized linear spring model of the uncoupled imperfect ...
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Article
Interfacial fracture analysis of a piezoelectric–polythene composite cylindrical shell patch under axial shear
The present work studies the interfacial fracture in a piezoelectric cylindrical shell patch. The problem is solved by the methods of infinite trigonometric series and Cauchy singular integral equation, and th...
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Article
Interface edge crack in a multiferroic semicylinder
The purpose of the present work is to study the interface edge cracking problem in a semicircular cylindrical multiferroic composite theoretically by the methods of infinite series and singular integral equati...
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Article
Multiple cracks on the interface between a piezoelectric layer and an orthotropic substrate
In the present work, we investigate the problem of multiple cracks on the interface between a piezoelectric layer and an orthotropic substrate. The method of dislocation simulation and singular integral equati...
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Article
Interfacial fracture analysis of a graded piezoelectric layer on a substrate with finite dimension
In fracture analysis of piezoelectric devices, the structural dimension is often assumed to be infinite at least in one direction. However, all practical piezoelectric structures are finite and their dimension...
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Article
Two collinear unequal cracks in a poled piezoelectric plane: Mode I case solved by a new approach of real fundamental solutions
The purpose of the present work is to study the problem of two collinear unequal cracks in a piezoelectric plane under mode I electromechanical loadings via a new approach. For the first time, real fundamental...
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Article
Anti-plane shear fracture of the interface in a cylindrical smart structure with functionally graded magnetoelectroelastic properties
The purpose of the present work is to study the fracture behavior of the arc-shaped interface in a cylindrical non-homogeneous magnetoelectroelastic structure. Fracture analysis is performed by the method of C...
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Article
Effects of the weak/micro-discontinuity of interface on the fracture behavior of a functionally graded coating with an inclined crack
The mechanical model was established for the anti-plane fracture problem of a functionally graded coating–substrate system with a coating crack inclined to the weak/micro-discontinuous interface. The Cauchy si...
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Article
Mechanical modeling and transient anti-plane fracture analysis for the graded inter-diffusion regions in a bonded structure
An inter-diffusion interface model (IDIM) is put forward for a bonded structure. Laplace and Fourier integral transforms are applied to reduce the transient anti-plane fracture problem of the structure as a Ca...
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Article
Dynamic responses of a crack in a layered graded magnetoelectroelastic sensor subjected to harmonic waves
The mechanical model is established for the dynamic fracture problem of a layered graded magnetoelectroelastic sensor subjected to harmonic waves. Fourier integral transform is employed to derive the system of...
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Article
Fracture analysis in micropolar elasticity: mode-I crack
Micropolar elasticity theory links together the macro mechanical behavior and the micro geometrical scales and makes it possible to study the macro and micro fracture of micro-structural materials by classical...
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Article
Dynamic stress intensity factor of a crack perpendicular to the weak-discontinuous interface in a nonhomogeneous coating–substrate structure
A mechanical model was established for the antiplane dynamic fracture problem of a functionally graded coating–substrate structure with a coating crack perpendicular to the weak-discontinuous interface. The pr...
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Article
Fracture analysis of a weak-discontinuous interface in a symmetrical functionally gradient composite strip loaded by anti-plane impact
The anti-plane impact fracture analysis was performed for a weak-discontinuous interface in a symmetrical functionally gradient composite strip. A new bi-parameter exponential function was introduced to simula...
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Article
Fracture analysis in micropolar elasticity: anti-plane crack
Anti-plane fracture analysis is performed for a micropolar material. The crack problem is reduced as Cauchy singular integral equations by Fourier integral transform. Numerical solutions of the stress intensit...
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Article
Stress intensity factor of an anti-plane crack parallel to the weak/micro-discontinuous interface in a bi-FGM composite
The problem considered is a mode III crack lying parallel to the interface of an exponential-type functional graded material (FGM) strip bonded to a linear-type FGM substrate with infinite thickness. By applyi...
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Article
An anti-plane crack perpendicular to the weak/micro-discontinuous interface in a bi-FGM structure with exponential and linear non-homogeneities
Treated was an anti-plane crack perpendicular to the interface of an exponential-type FGM strip bonded to another linear-type FGM substrate with infinite thickness. Through Fourier integral transform, the prob...
