Bayesian parameter identification of lattice discrete particle model for concrete
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322811" target="_blank" >RIV/68407700:21110/18:00322811 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.21495/91-8-325" target="_blank" >http://dx.doi.org/10.21495/91-8-325</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21495/91-8-325" target="_blank" >10.21495/91-8-325</a>
Alternative languages
Result language
angličtina
Original language name
Bayesian parameter identification of lattice discrete particle model for concrete
Original language description
The investigated lattice discrete particle model allows to simulate the failure behaviour of concrete. The main characteristic of this model is its response dependence on randomly generated geometrical features of material internal structure according to the basic concrete properties and the size distribution of the aggregates. This makes the model stochastic and the corresponding calibration difficult. On top of this, the model simulation is computationally demanding which limits usage of the full numerical model in an identification procedure. To overcome these obstacles, the polynomial chaos based surrogate model is employed. This approximation eradicates the original model stochasticity, but the corresponding uncertainty can be estimated from the approximation error. The quantified uncertainty is then involved in the Bayesian parameter inference based on Markov chain Monte Carlo sampling with use of cheap surrogate evaluations. The proposed identification procedure is verified on a basis of synthetic experimental data set from notched three-point-bending tests and cube compression tests.
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/GJ16-11473Y" target="_blank" >GJ16-11473Y: Identification of Aleatory Uncertainty in Parameters of Heterogenous Materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Engineering Mechanics 2018: Book of Full Texts
ISBN
978-80-86246-88-8
ISSN
1805-8248
e-ISSN
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Number of pages
4
Pages from-to
325-328
Publisher name
Ústav teoretické a aplikované mechaniky AV ČR, v. v. i.
Place of publication
Praha
Event location
Svratka
Event date
May 14, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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