Elastodynamic image forces on dislocations
WebSep 20, 2024 · The elastodynamic image forces acting on straight screw dislocations in the presence of planar phase boundaries are derived. Two separate dislocations are … WebThe 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 …
Elastodynamic image forces on dislocations
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WebFeb 1, 2016 · Fig. 2 compares images of time sequences of dislocation nucleation and motion from MD and CAC simulations of Model-1 (d/D = 1/10, Fig. 2 a) and Model-2 (d/D = 1/20, Fig. 2 b). Due to the symmetry of the specimen configuration about the y axis, only the left part of the specimen in MD and the right part of the specimen in CAC are displayed … WebMay 1, 2024 · The moving shear dislocation loop is taken as an example of a prototypical 3D dislocation, which, once established, can be used in future full-fledged 3D DDE simulations. The elastodynamic stress field of a moving shear loop and the interaction forces between two shear dislocation loops will be presented and discussed for the first …
WebSep 1, 2015 · 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 ... WebSep 8, 2015 · The explicit form of the elastodynamic fields of an injected, quiescent screw dislocation are also derived. The resulting image forces are affected by retardation …
Webtreatment of the image force problem. In the light of these results, and given the practical relevance the presence of interfaces has on determining the mechanical behaviour of many crystalline materials, in this article, I focus on deriving the elastodynamic image forces acting on screw dislocations in the presence of (i) a rigid interface ...
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WebSep 1, 2015 · where B is the magnitude of the Burgers vector, μ the shear modulus and ν Poisson's ratio, and F x is the image force in the glissile direction per unit length.. This … ihis numberWebThe 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 … ihis peiWebElastodynamic image forces on dislocations - CORE Reader ihis opasWebIt 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. The elastodynamic image forces on edge and screw dislocations in the … is there 12k goldWebJun 16, 2024 · In this work, numerical computations of image forces and stored energy during the growth of a strain free grain within a recovered matrix containing an array of identical dislocations are performed. A decrease of the stored energy is observed when image forces are attractive and an increase when image forces are repulsive. ihis percumentWebThe 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 ... ihis phoneWebThe 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 ... is there 12 or 13 seasons of bones