Spojity model formovani diclokacni struktury zalozeny na statistice

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985556%3A_____%2F07%3A00080955" target="_blank" >RIV/67985556:_____/07:00080955 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Statistically based continuum model of dislocation cell structure formation

Popis výsledku v původním jazyce

Within the framework of continuum mechanics, the formation of misoriented dislocation cells can be explained as a result of a trend to reduce the energetically costly hardening in multi slip by decreasing locally the number of active slip systems. In thestandard (local) approach, the continuum theory predicts an infinitesimally small cell size. The finite size of real cells is controlled by short-range dislocation interactions: (i) the self-force of the curved dislocations, (ii) the short-range correlation among dislocations. Within the proposed framework the cell size is a result of a compromise: bulk strain and dissipative energy tends to decrease the size, while short-range interactions restrict that tendency. In the present paper the non-local effects are analyzed using a model of an infinite crystal deformed by symmetric double slip, where plastic strain is carried by straight, parallel, edge dislocations. The constitutive equations of the model are derived from the statistical..

Název v anglickém jazyce

Statistically based continuum model of dislocation cell structure formation

Popis výsledku anglicky

Within the framework of continuum mechanics, the formation of misoriented dislocation cells can be explained as a result of a trend to reduce the energetically costly hardening in multi slip by decreasing locally the number of active slip systems. In thestandard (local) approach, the continuum theory predicts an infinitesimally small cell size. The finite size of real cells is controlled by short-range dislocation interactions: (i) the self-force of the curved dislocations, (ii) the short-range correlation among dislocations. Within the proposed framework the cell size is a result of a compromise: bulk strain and dissipative energy tends to decrease the size, while short-range interactions restrict that tendency. In the present paper the non-local effects are analyzed using a model of an infinite crystal deformed by symmetric double slip, where plastic strain is carried by straight, parallel, edge dislocations. The constitutive equations of the model are derived from the statistical..

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/IAA1075402" target="_blank" >IAA1075402: Variační analýza v nehladkých úlohách matematické fyziky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review. B

ISSN

1098-0121

e-ISSN

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Svazek periodika

75

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

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EID výsledku v databázi Scopus

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