About: A New Trend in Plasticity: Strain Gradient Theories

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The recent renewed interest in the strain gradient plasticity has been motivated mainly by the experimental evidence that plastic flow processes in crystalline solids are inherently size dependent. However, similarly as in the previous attempts to introduce formally strain gradients into plasticity the current theories have failed to reflect the underlying physical mechanisms. Their range of validity has remained uncertain. The two major problems in the gradient theories are the choice of the gradients which are to be used and the formulation of adequate constitutive equations for them. This paper indicates that the problems can be overcome by putting the theoretical framework in correlation with microscopic observations. For the case of shear bands itis shown that an advanced non-local plasticity model need not be a curve fitting procedure providing that the constitutive equations for additional degrees of freedom (strain gradients, directors) are based on knowledge of the mechanism The recent renewed interest in the strain gradient plasticity has been motivated mainly by the experimental evidence that plastic flow processes in crystalline solids are inherently size dependent. However, similarly as in the previous attempts to introduce formally strain gradients into plasticity the current theories have failed to reflect the underlying physical mechanisms. Their range of validity has remained uncertain. The two major problems in the gradient theories are the choice of the gradients which are to be used and the formulation of adequate constitutive equations for them. This paper indicates that the problems can be overcome by putting the theoretical framework in correlation with microscopic observations. For the case of shear bands itis shown that an advanced non-local plasticity model need not be a curve fitting procedure providing that the constitutive equations for additional degrees of freedom (strain gradients, directors) are based on knowledge of the mechanism (en)
Title	A New Trend in Plasticity: Strain Gradient Theories A New Trend in Plasticity: Strain Gradient Theories (en)
skos:prefLabel	A New Trend in Plasticity: Strain Gradient Theories A New Trend in Plasticity: Strain Gradient Theories (en)
skos:notation	RIV/68407700:21340/01:01065537!RIV/2002/MSM/213402/N
http://linked.open.../vavai/riv/strany	29;34
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 210000021)
http://linked.open...vai/riv/dodaniDat	2002
http://linked.open...aciTvurceVysledku	Kratochvíl, Jan
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta jaderná a fyzikálně inženýrská
http://linked.open...dnocenehoVysledku	672221
http://linked.open...ai/riv/idVysledku	RIV/68407700:21340/01:01065537
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	plasticity; shear bands; strain gradients (en)
http://linked.open.../riv/klicoveSlovo	shear bands plasticity strain gradients
http://linked.open...ontrolniKodProRIV	[ACF38F7CDB20]
http://linked.open...v/mistoKonaniAkce	Křižánky
http://linked.open...i/riv/mistoVydani	Brno
http://linked.open...i/riv/nazevZdroje	Proceedings of International Workshop Research Activities of Physical Departments of Civil Engineering Faculties in the Czech and Slovak Republics
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
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http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2001
http://linked.open...iv/tvurceVysledku	Kratochvíl, Jan
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2001-06-26 (xsd:date)
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20210000021
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Technical University
https://schema.org/isbn	80-7204-201-7
http://localhost/t...ganizacniJednotka	21340

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