About: Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles

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About: Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Response of three covalent crystals with a diamond lattice (C, Si and Ge) to uniaxial and a special triaxial (generally nonhydrostatic) loading is calculated from first principles. The lattice deformations are described in terms of variations of bond lengths and angles. The triaxial stress state is simulated as a superposition of axial tension or compression and transverse (both tensile and compressive) biaxial stresses. The biaxial stresses are considered to be adjustable parameters and the theoretical strengths in tension and compression along <100>, <110>, <111> crystallographic directions are calculated as their functions. The obtained results revealed that the compressive strengths are, consistently to fcc metals, almost linear functions of the transverse stresses. Tensile transverse stresses lower the compressive strength and vice versa. The tensile strengths, however, are not monotonic functions of the transverse biaxial stresses since they mostly exhibit maxima for certain values of the trans Response of three covalent crystals with a diamond lattice (C, Si and Ge) to uniaxial and a special triaxial (generally nonhydrostatic) loading is calculated from first principles. The lattice deformations are described in terms of variations of bond lengths and angles. The triaxial stress state is simulated as a superposition of axial tension or compression and transverse (both tensile and compressive) biaxial stresses. The biaxial stresses are considered to be adjustable parameters and the theoretical strengths in tension and compression along <100>, <110>, <111> crystallographic directions are calculated as their functions. The obtained results revealed that the compressive strengths are, consistently to fcc metals, almost linear functions of the transverse stresses. Tensile transverse stresses lower the compressive strength and vice versa. The tensile strengths, however, are not monotonic functions of the transverse biaxial stresses since they mostly exhibit maxima for certain values of the trans (en)
Title	Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles (en)
skos:prefLabel	Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles (en)
skos:notation	RIV/00216305:26620/13:PU100855!RIV14-GA0-26620___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0068), P(GA106/09/1524), P(GD106/09/H035)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Řehák, Petr Černý, Miroslav Pokluda, Jaroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Středoevropský technologický institut
http://linked.open...dnocenehoVysledku	107376
http://linked.open...ai/riv/idVysledku	RIV/00216305:26620/13:PU100855
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	theoretical strength, triaxial loading, diamond structure, ab initio calculations (en)
http://linked.open.../riv/klicoveSlovo	ab initio calculations theoretical strength triaxial loading diamond structure
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[2D3DB12465A3]
http://linked.open...i/riv/nazevZdroje	Journal of Physics: Condensed Matter
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Central european institute of technology First-principles study of mechanical properties of ideal metallic fiber nano-composites Multiscale design of advanced materials
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	25
http://linked.open...iv/tvurceVysledku	Pokluda, Jaroslav Černý, Miroslav Řehák, Petr Umeno, Yoshitaka
http://linked.open...ain/vavai/riv/wos	000313100500007
issn	0953-8984
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0953-8984/25/3/035401
http://localhost/t...ganizacniJednotka	26620

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