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Г. Ш. Болтачев, Н. Б. Волков, А. Л. Максименко, М. Б. Штерн
«Характерные особенности механического поведения наноразмерных порошков»
365–382 (2014)

PACS numbers: 61.43.Bn, 61.43.Gt, 62.23.St, 81.07.Wx, 83.10.-y, 83.60.-a, 83.80.Fg

Discrete three-dimensional model of oxide nanosize powders is developed. The different processes are simulated by the granular-dynamics method. The processes of the uniaxial and biaxial (radial) pressing, the omniradial (isostatic) compression, the compaction combined with shear deformations as well as the shear deformation without compaction are simulated. The interaction of particles involves the elastic repulsion forces, the tangential forces of ‘friction’, the dispersion attraction forces as well as the possibility of formation/destruction of strong chemical bonds. The loading surface of a nanopowder is constructed within the space of the stress-tensor invariants. The associated flow rule is analysed.

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