The net interaction force between two skew dislocations in an elastically anisotropic half-space
- Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
In the present work the author shall show that the independence of the total interaction force on separation remains valid for two skew straight dislocations in an anisotropic linear elastic half-space (each dislocation being parallel to the traction-free half-space boundary). If he refers to the dislocation closest to the half-space boundary as (1) and to the other dislocation as (2), he obtains the remarkable result that the total interaction force of (1) on (2) vanishes, while the total interaction force of (2) on (1) is precisely twice the net interaction force which (2) exerts on (1) in an infinite medium. The author calls this set of results Nix`s Theorem after a friend and colleague W.D. Nix, whose numerical computations for isotropic half-spaces motivated the interest in seeking its proof for half-spaces of arbitrary anisotropy. The fact that the two net interaction forces in the half-space problem are not equal and opposite (unless they both vanish) is due to the lack of translational invariance normal to the half-space boundary.
- OSTI ID:
- 651129
- Report Number(s):
- CONF-980202-; ISSN 1359-6462; TRN: IM9826%%85
- Journal Information:
- Scripta Materialia, Vol. 39, Issue 4-5; Conference: Annual meeting of the Minerals, Metals and Materials Society (TMS), San Antonio, TX (United States), 15-19 Feb 1998; Other Information: PBD: 4 Aug 1998
- Country of Publication:
- United States
- Language:
- English
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