. . "885"^^ . "Neuvedeno."@en . . . . . "0"^^ . . "The model of dislocation structure formation based on the theory of continuous distribution of dislocations"@en . "Z\u00E1m\u011Brem projektu je vybudovat fyzik\u00E1ln\u011B zd\u016Fvodn\u011Bn\u00FD teoretick\u00FD model tvorby a p\u0159em\u011Bn disloka\u010Dn\u00ED struktury v deformovan\u00FDch materi\u00E1lech, kter\u00FD je zalo\u017Een na Kosevi\u010Dov\u011B dynamice spojit\u00E9ho rozlo\u017Een\u00ED dislokac\u00ED. Jsou uva\u017Eov\u00E1ny dv\u011B vz\u00E1jemn\u011B interaguj\u00EDc\u00ED disloka\u010Dn\u00ED populace: skluzov\u00E9 dislokace a prismatick\u00E9 disloka\u010Dn\u00ED smy\u010Dky. Skluzov\u00E9 dislokace jsou pops\u00E1ny tensorem hustoty dislokac\u00ED, smy\u010Dky polariza\u010Dn\u00EDm tensorem. \u017Divotaschopnost modelu byla testov\u00E1na na p\u0159\u00EDpadu krystalu ve stavu rovinn\u00E9 deformace tv\u00E1\u0159en\u00E9ho jednoduch\u00FDm skluzem. P\u0159edb\u011B\u017En\u00E9 v\u00FDsledky uk\u00E1zaly, \u017Ee navrhovan\u00FD model dob\u0159e popisuje po\u010D\u00E1te\u010Dn\u00ED stadium tvorby disloka\u010Dn\u00EDch \u00FAtvar\u016F a vypo\u010Dten\u00E1 zm\u011Bna jejich charakteristick\u00E9 velikosti s teplotou odpov\u00EDd\u00E1 pozorovan\u00E9 z\u00E1vislosti. Bude vypracov\u00E1na t\u0159\u00EDrozm\u011Brn\u00E1, rychlostn\u011B z\u00E1visl\u00E1 verze modelu zahrnuj\u00EDc\u00ED v\u00EDcen\u00E1sobn\u00FD skluz a neline\u00E1rn\u00ED jevy (ust\u00E1len\u00E9 stavy disloka\u010Dn\u00ED struktury a jej\u00ED p\u0159em\u011Bny."@cs . . "1"^^ . "24"^^ . "1821"^^ . "1"^^ . . . "24"^^ . "V\u00FDpo\u010Det tvorby disloka\u010Dn\u00EDch struktur zalo\u017Een\u00FD na teorii spojit\u00E9ho rozlo\u017Een\u00ED dislokac\u00ED"@cs . . "The aim of the proposed project is to developed the physically justified theoretical model of the dislocation structure formation and their transformations in deformed solids based on Kosevich's dynamics of the continuous distribution of dislocations. Twaveraged interacting dislocation populations are considered. The glide dislocations are described by the dislocation density tensor, and the dislocation loops by the polarization tensor. As the pilot test the plain strain, rate independent model of a crystal deformed by single slip was analysed. The preliminary results indicates that the model describes well the early stage of dislocation pattering and temperature dependence of the characteristic size of the pattern. The model will be extended to three dimensional, rate dependent, multi-slip version, and the non-linear effects (dislocation structure saturation and restructuralization) will be incorporated."@en .