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Mechanical interaction of point defects and volume defects near curved surfaces
Author(s) -
Michael D.,
Michel B.
Publication year - 1981
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19810161007
Subject(s) - isotropy , point (geometry) , surface (topology) , boundary (topology) , volume (thermodynamics) , crystallographic defect , boundary value problem , physics , classical mechanics , mathematical analysis , mechanics , geometry , mathematics , condensed matter physics , thermodynamics , optics
The paper deals with the influence of spherical surfaces of solids upon elastic interaction between two point defects or volume defects in an elastic isotropic medium. Formulae have been derived, taking into account the finite dimensions of the defects. This leads to analytic expressions for the energy terms which remain correct (finite) also in the immediate vicinity of the boundary surface of the solid. Hence, they are more sufficient for further application than it is the case with formulae, based on the concept of singular dilatation centres only. The latter are mostly used for investigations of the bulk material, but they lead to divergent expressions for the interaction energy at the surface. Approximation formulae will be given for practical application.