Počet záznamů: 1
Incompatibility of strains and its application to mesoscopic studies of plasticity
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SYSNO ASEP 0348736 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Incompatibility of strains and its application to mesoscopic studies of plasticity Tvůrce(i) Gröger, Roman (UFM-A) RID, ORCID
Lookman, T. (US)
Saxena, A. (US)Celkový počet autorů 3 Zdroj.dok. Physical Review. B - ISSN 1098-0121
Roč. 82, č. 14 (2010), Art. No. 144104Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova incompatibility ; dislocation ; mesoscopic Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000282678900004 DOI 10.1103/PhysRevB.82.144104 Anotace Structural transitions are invariably affected by lattice distortions. If the body is to remain crack free, the strain field cannot be arbitrary but has to satisfy the Saint-Venant compatibility constraint. Equivalently, an incompatibility constraint consistent with the actual dislocation network has to be satisfied in media with dislocations. We provide a systematic analysis of this constraint in three dimensions and show how three incompatibility equations accommodate an arbitrary dislocation density. This approach allows the internal stress field to be calculated for an anisotropic material with spatially inhomogeneous microstructure and distribution of dislocations by minimizing the free energy. This is illustrated by calculating the stress field of an edge dislocation and comparing it with that of an edge dislocation in an infinite isotropic medium. We outline how this procedure can be utilized to study the interaction of plasticity with polarization and magnetization. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2011
Počet záznamů: 1