Analytical random field-based model for fracture in concrete
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU134422" target="_blank" >RIV/00216305:26110/19:PU134422 - isvavai.cz</a>
Výsledek na webu
<a href="https://framcos.org/FraMCoS-10.php#gsc.tab=0" target="_blank" >https://framcos.org/FraMCoS-10.php#gsc.tab=0</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Analytical random field-based model for fracture in concrete
Popis výsledku v původním jazyce
The paper delivers an analytical model for prediction of peak force in concrete specimens loaded in bending (both notched and unnotched). The model is capable of predicting the statistics of the peak force of beams by computing the extreme values of sliding averages of random strength field. Local strength of the specimen is modelled by a stationary isotropic random field with Gaussian distribution and squared-exponential autocorrelation function. The averaging operation represents the progressive loss in material integrity and the associated stress redistribution that takes place prior to reaching the peak load. Once the (linear) averaging process is performed analytically, the resulting random field of averaged strength is assumed to represent a series of representative volume elements (RVEs) and the global strength is found by solving for the minimum of such an effective strength field. All these operations can be written analytically and there are only four free parameters: the three dimensions of
Název v anglickém jazyce
Analytical random field-based model for fracture in concrete
Popis výsledku anglicky
The paper delivers an analytical model for prediction of peak force in concrete specimens loaded in bending (both notched and unnotched). The model is capable of predicting the statistics of the peak force of beams by computing the extreme values of sliding averages of random strength field. Local strength of the specimen is modelled by a stationary isotropic random field with Gaussian distribution and squared-exponential autocorrelation function. The averaging operation represents the progressive loss in material integrity and the associated stress redistribution that takes place prior to reaching the peak load. Once the (linear) averaging process is performed analytically, the resulting random field of averaged strength is assumed to represent a series of representative volume elements (RVEs) and the global strength is found by solving for the minimum of such an effective strength field. All these operations can be written analytically and there are only four free parameters: the three dimensions of
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
20102 - Construction engineering, Municipal and structural engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GA19-12197S" target="_blank" >GA19-12197S: Sdružená Úloha Mechaniky a Proudění v Betonu Řešená Pomocí Meso-Úrovňového Diskrétního Modelu</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů