- Tytuł:
- Crystal Plasticity Treated as a Quasi-Static Material Flow through Adjustable Crystal Lattice
- Autorzy:
- Kratochvíl, J.
- Powiązania:
- https://bibliotekanauki.pl/articles/1418490.pdf
- Data publikacji:
- 2012-09
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
62.20.F-
81.40.Lm
83.50.-v - Opis:
- Considering high pressure torsion experiments as a motivation, plastic behavior of crystalline solids is treated as a highly viscous material flow through an adjustable crystal lattice. Instead of the traditional decomposition rule considering the deformation gradient as a product of the elastic and plastic parts, the proposed model is based on its rate form: the velocity gradient consists of the lattice velocity gradient and the sum of the velocity gradients corresponding to the slip rates of individual slip systems; the slip strains themselves are not defined in the model. The geometrical changes caused by material flow and the slip strains can be specified a posteriori. Crystal lattice distortions are measured with respect to a lattice reference configuration. In an adopted rigid plastic approximation the lattice distortions are reduced to rotations. Constitutive equations incorporate non-local hardening caused by close range interactions among dislocations.
- Źródło:
-
Acta Physica Polonica A; 2012, 122, 3; 482-484
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki