scholarly journals The Elastic Interaction of an Edge Dislocation with a Circular Inclusion in a Semi-Infinite Medium : 2nd Report, In the order of a Free Surface, a Dislocation and an Inclusion

1977 ◽  
Vol 43 (371) ◽  
pp. 2492-2499 ◽  
Author(s):  
Kenji SAITO ◽  
Akira MATSUOKA ◽  
Tohru KUWATA ◽  
Shunsuke SHIOYA
Keyword(s):  
Free Surface ◽  
Edge Dislocation ◽  
Elastic Interaction ◽  
Circular Inclusion ◽  
Infinite Medium

Elastic interaction between a point defect and an edge dislocation

1979 ◽  
Vol 50 (3) ◽  
pp. 1263-1266 ◽  
Author(s):  
R. A. Johnson
Keyword(s):  
Point Defect ◽  
Edge Dislocation ◽  
Elastic Interaction

Edge dislocation interacting with a nonuniformly coated circular inclusion

2010 ◽  
Vol 81 (8) ◽  
pp. 1117-1128 ◽  
Author(s):  
Fu Mo Chen
Keyword(s):  
Edge Dislocation ◽  
Circular Inclusion

An analysis of the elastic interaction between an edge dislocation and an internal crack

1990 ◽  
Vol 130 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Shing-Dar Wang ◽  
Sanboh Lee
Keyword(s):  
Edge Dislocation ◽  
Elastic Interaction ◽  
Internal Crack

Edge dislocation inside a circular inclusion

1965 ◽  
Vol 13 (3) ◽  
pp. 141-147 ◽  
Author(s):  
J. Dundurs ◽  
G.P. Sendeckyj
Keyword(s):  
Edge Dislocation ◽  
Circular Inclusion

Interaction between an edge dislocation and a circular inclusion with interfacial rigid lines

2005 ◽  
Vol 180 (1-4) ◽  
pp. 157-174 ◽  
Author(s):  
Y. W. Liu ◽  
Q. H. Fang ◽  
C. P. Jiang
Keyword(s):  
Edge Dislocation ◽  
Circular Inclusion

An Edge Dislocation in a Three-Phase Composite Cylinder Model With a Sliding Interface

2002 ◽  
Vol 69 (4) ◽  
pp. 527-538 ◽  
Author(s):  
X. Wang ◽  
Y.-p. Shen
Keyword(s):  
Edge Dislocation ◽  
Arbitrary Point ◽  
Circular Inclusion ◽  
Composite Cylinder ◽  
Phase Form ◽  
Sliding Interface ◽  
Three Phase ◽  
Cylinder Model ◽  
The Matrix ◽  
Perfect Interface

An exact elastic solution is derived in a decoupled manner for the interaction problem between an edge dislocation and a three-phase circular inclusion with circumferentially homogeneous sliding interface. In the three-phase composite cylinder model, the inner inclusion and the intermediate matrix phase form a circumferentially homogeneous sliding interface, while the matrix and the outer composite phase form a perfect interface. An edge dislocation acts at an arbitrary point in the intermediate matrix. This three-phase cylinder model can simultaneously take into account the damage taking place in the circumferential direction at the inclusion-matrix interface and the interaction effect between the inclusions. As an application, we then investigate a crack interacting with the slipping interface.

A note on disturbances in a layered medium containing a magnetic field

1964 ◽  
Vol 54 (6A) ◽  
pp. 1771-1777
Author(s):  
D. K. Sinha
Keyword(s):  
Magnetic Field ◽  
Free Surface ◽  
Layered Medium ◽  
Present Note ◽  
Infinite Medium ◽  
The Other ◽  
Time Dependent ◽  
The Earth ◽  
Propagation Of Waves ◽  
Initial Magnetic Field

abstract In recent years, Kaliski has contributed a series of papers on the interaction of elastic and magnetic fields and some of them, [1], [2], [3] are concerned with the propagation of waves in a semi-infinite medium either loaded or conditioned otherwise, at its free surface. Such problems, as Kaliski [1] has remarked, may have relevance in the practical seismic problem of detecting the mechanical explosions inside the earth. Moreover, their geophysical implications have also been examined by Knopoff [4[, Cagniard [5], Banos [6], and Rikitake [7]. The present note seeks to investigate disturbances in a medium consisting of two layers (one finite and the other infinite) of elastic medium intervened by a thin layer of vacuum. The vacuum is traversed by an initial magnetic field. The disturbances in the medium are assumed to have been produced by a time-dependent load on the free surface of the medium. The method of Laplace transform has been used to facilitate the solution of the problem.

Elastic interaction between screw dislocations and the internal crack near a free surface

1991 ◽  
Vol 49 (1) ◽  
pp. 29-40 ◽  
Author(s):  
Sham-Tsong Shiue ◽  
Sanboh Lee
Keyword(s):  
Free Surface ◽  
Elastic Interaction ◽  
Internal Crack ◽  
Screw Dislocations

A two-dimensional circular inclusion problem

1969 ◽  
Vol 65 (3) ◽  
pp. 823-830 ◽  
Author(s):  
R. D. List
Keyword(s):  
Edge Dislocation ◽  
Circular Inclusion ◽  
Elastic Matrix ◽  
Inclusion Problem ◽  
Two Dimensional ◽  
Concentrated Force ◽  
Elastic Fields ◽  
The Matrix ◽  
Elastic Circular Inclusion

AbstractThe elastic fields in an elastic circular inclusion and its surrounding infinite dissimilar elastic matrix, are determined when either the matrix or inclusion is subject to a concentrated force or edge dislocation.

scholarly journals Elastodynamic image forces on dislocations

2015 ◽  
Vol 471 (2181) ◽  
pp. 20150433 ◽  
Author(s):  
Beñat Gurrutxaga-Lerma ◽  
Daniel S. Balint ◽  
Daniele Dini ◽  
Adrian P. Sutton
Keyword(s):  
Free Surface ◽  
Rayleigh Wave ◽  
Edge Dislocation ◽  
Wave Speed ◽  
Image Force ◽  
Inertial Effects ◽  
Screw Dislocations ◽  
The Core ◽  
Slow Moving ◽  
Rayleigh Wave Speed

The elastodynamic image forces on edge and screw dislocations in the presence of a planar-free surface are derived. The explicit form of the elastodynamic fields of an injected, quiescent screw dislocation are also derived. The resulting image forces are affected by retardation effects: the dislocations experience no image force for a period of time defined by the arrival and reflection at the free surface of the dislocation fields. For the case of injected, stationary dislocations, it is shown that the elastodynamic image force tends asymptotically to the elastotatic prediction. For the case of injected, moving dislocations, it is shown that the elastodynamic image force on both the edge and the screw dislocations is magnified by inertial effects, and becomes increasingly divergent with time; this additional effect, missing in the elastostatic description, is shown to be substantial even for slow moving dislocations. Finally, it is shown that the elastodynamic image force of an edge dislocation moving towards the surface at the Rayleigh wave speed becomes repulsive, rather than attractive; this is suggestive of instabilities at the core of the dislocation, and likely resonances with the free surface.

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