Physics – Mathematical Physics
Scientific paper
2007-09-12
Journal of Technical Physics, vol. 48, 3-4, pp. 193-214, 2007.
Physics
Mathematical Physics
Keywords. Anholonomity, Bravais moving frame, Burgers vector, crystal surfaces, dislocation density, integral manifolds, Killi
Scientific paper
A continuous geometric description of Bravais monocrystals with many dislocations and secondary point defects created by the distribution of these dislocations is proposed. Namely, it is distinguished, basing oneself on Kondo and Kroners Gedanken Experiments for dislocated bodies, an anholonomic triad of linearly independent vector fields. The triad defines local crystallographic directions of the defective crystal as well as a continuous counterpart of the Burgers vector for single dislocations. Next, the influence of secondary point defects on the distribution of many dislocations is modeled by treating these local crystallographic directions as well as Burgers circuits as those located in such a Riemannian material space that becomes an Euclidean 3-manifold when dislocations are absent. Some consequences of this approach are discussed.
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