Comparison of particle placement schemes for discrete element models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU125058" target="_blank" >RIV/00216305:26110/17:PU125058 - 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

Comparison of particle placement schemes for discrete element models

Popis výsledku v původním jazyce

The estimation of uncertainties in probabilistic structural analysis may improve if the spatial variability concept is properly introduced. The presented paper addresses various discrete particle placement choices and schemes for discrete particle models such that the governing realization of random fields for spatially variable material properties is correlated to a particular structural discretization (i.e. radius and placement of particles) in a discrete framework. Although some discrete element models already mimic microstructural effects of concrete very well, when compared to the continuum framework, there are still reasons for introducing higher order spatial variability, such as the statistical size effect that cannot be captured numerically without introducing spatial variability in the material property fields with an appropriately chosen auto-correlation length. By introducing the newly developed spatial variability package, classical experiments for concrete may be more realistically reproduced and associated statistical features discussed, also in terms of particular particle placement schemes, observed scattering and physical reference.

Název v anglickém jazyce

Comparison of particle placement schemes for discrete element models

Popis výsledku anglicky

The estimation of uncertainties in probabilistic structural analysis may improve if the spatial variability concept is properly introduced. The presented paper addresses various discrete particle placement choices and schemes for discrete particle models such that the governing realization of random fields for spatially variable material properties is correlated to a particular structural discretization (i.e. radius and placement of particles) in a discrete framework. Although some discrete element models already mimic microstructural effects of concrete very well, when compared to the continuum framework, there are still reasons for introducing higher order spatial variability, such as the statistical size effect that cannot be captured numerically without introducing spatial variability in the material property fields with an appropriately chosen auto-correlation length. By introducing the newly developed spatial variability package, classical experiments for concrete may be more realistically reproduced and associated statistical features discussed, also in terms of particular particle placement schemes, observed scattering and physical reference.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/LO1408" target="_blank" >LO1408: AdMaS UP - Pokročilé stavební materiály, konstrukce a technologie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Safety, Reliability, Risk, Resilience and Sustainability of Structures and Infrastructure

ISBN

978-3-903024-28-1

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

751-757

Název nakladatele

TU-Verlag

Místo vydání

Vienna

Místo konání akce

Vienna

Datum konání akce

6. 8. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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