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Statements

Subject Item
n2:RIV%2F68407700%3A21110%2F07%3A01133785%21RIV08-GA0-21110___
rdf:type
n8:Vysledek skos:Concept
dcterms:description
Complex analysis of massive historical structures that takes into account all geometrical details is still not computationally feasible. Instead, either coupled or uncoupled multi-scale homogenization analysis is often performed whereas the latter one in particular has proved its potential when searching for a reliable estimate of the response of large, generally three-dimensional, structures. In such a case the macroscopic analysis is carried out independently such that the driving material parameters of the macroscopic constitutive model are found from a detailed numerical analysis on the mesoscale. This step constitutes the most important part of the uncoupled multi-scale approach and its success is highly influenced by the proper representation of the material response on the level of individual phases, bricks and mortar. An extension of the constitutive models currently implemented in the ATENA finite element code is proposed. Complex analysis of massive historical structures that takes into account all geometrical details is still not computationally feasible. Instead, either coupled or uncoupled multi-scale homogenization analysis is often performed whereas the latter one in particular has proved its potential when searching for a reliable estimate of the response of large, generally three-dimensional, structures. In such a case the macroscopic analysis is carried out independently such that the driving material parameters of the macroscopic constitutive model are found from a detailed numerical analysis on the mesoscale. This step constitutes the most important part of the uncoupled multi-scale approach and its success is highly influenced by the proper representation of the material response on the level of individual phases, bricks and mortar. An extension of the constitutive models currently implemented in the ATENA finite element code is proposed. Plastické modely, které jsou inspirovány představou pokluzu v krystalové mřížce, jsou zaměřeny na popis trvalé (plastické) deformace. Při odtěžování se chová materiál jako lineárně pružný se stejnou tuhostí ve výchozím vztahu. Naproti tomu modely poškození jsou založeny na představě šířících se trhlin a popisují odpovídající redukci tuhosti materiálu. Ve skutečných materiálech obvykle dochází jak ke vzniku trvalých deformací, tak i ke snížení tuhosti a odtěžovací větev je někde mezi oběma extrémy. Tento jev naznačuje, že optimální je oba typy modelů kombinovat. Jako výchozí je zvolen konstitutivní model implementovaný v programu ATENA.
dcterms:title
Design of Damage-plastic Model for Quasi-brittle Materials Design of Damage-plastic Model for Quasi-brittle Materials Návrh plastického modelu s poškozením pro kvazikřehké materiály
skos:prefLabel
Návrh plastického modelu s poškozením pro kvazikřehké materiály Design of Damage-plastic Model for Quasi-brittle Materials Design of Damage-plastic Model for Quasi-brittle Materials
skos:notation
RIV/68407700:21110/07:01133785!RIV08-GA0-21110___
n4:strany
628;630
n4:aktivita
n20:P
n4:aktivity
P(1M0579), P(GA106/07/1244)
n4:dodaniDat
n19:2008
n4:domaciTvurceVysledku
n7:3638464 n7:8441804 n7:7182333
n4:druhVysledku
n6:D
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n5:predkladatel
n4:idSjednocenehoVysledku
416413
n4:idVysledku
RIV/68407700:21110/07:01133785
n4:jazykVysledku
n21:eng
n4:klicovaSlova
Damage; Numerical model; Plasticity; Quasi-brittle material
n4:klicoveSlovo
n11:Numerical%20model n11:Quasi-brittle%20material n11:Plasticity n11:Damage
n4:kontrolniKodProRIV
[14D92D6B1135]
n4:mistoKonaniAkce
Barcelona
n4:mistoVydani
Barcelona
n4:nazevZdroje
Computational Plasticity IX
n4:obor
n10:JD
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n13:GA106%2F07%2F1244 n13:1M0579
n4:rokUplatneniVysledku
n19:2007
n4:tvurceVysledku
Šejnoha, Michal Sýkora, Jan Vorel, Jan
n4:typAkce
n16:WRD
n4:zahajeniAkce
2007-09-05+02:00
s:numberOfPages
3
n17:hasPublisher
University of Catalunya
n18:isbn
978-84-96736-29-0
n9:organizacniJednotka
21110