Upscaling of coupled mechanical and mass transport discrete model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU146398" target="_blank" >RIV/00216305:26110/22:PU146398 - isvavai.cz</a>
Result on the web
<a href="https://congress.cimne.com/complas2021" target="_blank" >https://congress.cimne.com/complas2021</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1201/9781003316404-73" target="_blank" >10.1201/9781003316404-73</a>
Alternative languages
Result language
angličtina
Original language name
Upscaling of coupled mechanical and mass transport discrete model
Original language description
A computational homogenization approach for mesoscale discrete models of coupled mechanics and mass transport in concrete is developed via asymptotic expansion. Primary fields of the model (pressure, displacements and rotations) are decomposed into macroscopic and microscopic components. Taylor expansion is then applied to relate field values between the neighboring nodes. The expanded primary fields propagate through geometric, constitutive and balance equations to provide a two-level model. At the microscale, heterogeneous and discrete Representative Volume Element (RVE) problem is obtained. The homogenization renders the RVE to be steady state even for transient tasks. Periodic boundary conditions are applied and the load is imposed in a form of eigen pressure gradient, eigen strains and eigen curvatures, which are computed as projections of macroscopic tensors of pressure gradient, strain and curvature. The mechanical RVE is solved first as it is independent on the transport part. The transport RVE is then solved taking into account crack openings from the mechanical RVE. At the macrocale, homogeneous and continuous coupled transient equations emerge. These equations are solved with a help of the finite element method with a mechanical and transport RVE couple attached to each integration point. Biot’s coupling terms between transport and mechanics appear at the macroscale only. Simple examples are presented verifying the homogenization technique.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
<a href="/en/project/GA19-12197S" target="_blank" >GA19-12197S: Coupled Discrete Meso-scale Model for Mechanics and Transport Phenomena in Concrete</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Computational Modelling of Concrete and Concrete Structures
ISBN
978-1-032-32724-2
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
618-623
Publisher name
Neuveden
Place of publication
neuveden
Event location
Vídeň, TU Wien
Event date
May 30, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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