Image force and stability of a screw dislocation inside a coated cylindrical inhomogeneity with interface stresses

Feng, Hui; Fang, Qihong; Liu, Y. W.; Jin, Bo

doi:10.1007/s00707-011-0489-8

Cited by 24 publications

(1 citation statement)

References 20 publications

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“…On the basis of the general concept of surface/interface stress in solids by Gibbs [54] and developed for solving the elastic problems by Gurtin and Murdoch [55,56] and Gurtin et al [57], this approach has widely been used to study the elastic fields of nanosized inclusions and inhomogeneities [58][59][60], the elastic behavior of dislocations inside [61,62] and near [63][64][65][66] embedded circular [61][62][63][64] and elliptical [65,66] nanoinhomogeneities, inside [67][68][69] and near [70,71] embedded core-shell nanowires, at the nanotube/matrix interface [72], and in free-standing nanotubes [73,74] and core-shell nanowires [75,76], and the elastic behavior of wedge disclination dipoles near an embedded circular nanoinhomogeneity [77] and in the shell of a core-shell nanowire [78].…”

Section: Introductionmentioning

confidence: 99%

Wedge disclination dipole in an embedded nanowire within the surface/interface elasticity

Shodja¹,

Rezazadeh-Kalehbasti

Gutkin

2013

Journal of the Mechanical Behavior of Materials

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The elastic behavior of an arbitrary oriented wedge disclination dipole located inside a nanowire, which in turn is embedded in an infinite matrix, is studied within the surface/interface theory of elasticity. The corresponding boundary value problem is provided using complex potential functions. The potential functions are defined through modeling the wedge disclination in terms of an equivalent distribution of edge dislocations. The interface effects on the stress field and strain energy of the disclination dipole and image forces acting on it, the influence of relative shear moduli of the nanowire and the matrix, as well as the different characteristics of the interface are studied thoroughly. It is shown that the positive interface modulus leads to increased strain energy and extra repulsive forces on the disclination dipole. The noticeable effect of the negative interface modulus is the non-classical oscillations in the stress field of the disclination dipole and an extra attractive image force on it.

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