Experimental and numerical evaluation of uhpfrc slabs subjected to contact and close-in explosion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00336042" target="_blank" >RIV/68407700:21110/20:00336042 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.309.180" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/SSP.309.180</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.309.180" target="_blank" >10.4028/www.scientific.net/SSP.309.180</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental and numerical evaluation of uhpfrc slabs subjected to contact and close-in explosion

Popis výsledku v původním jazyce

This paper presents achievements in the field of the numerical simulation of the fibre reinforced concrete (FRC) and ultra-high performance fibre reinforced concrete (UHPFRC). The numerical simulations were performed to verify results of two experimental programmes focused on the blast resistance of FRC and UHPFRC. The response of the FRC and UHPFRC slabs to the contact and near-field blast was studied in these two experiments. As the detail behaviour of specimens could not be observed because of the blast load, the numerical models were prepared. The accuracy of the numerical models was evaluated based on the comparison of numerical and experimental results. Different approaches for blast simulation were tested and compared. The results indicate that the various phenomena (e.g. overpressure propagation, stress cumulation, crack propagation and damage extend) can be successfully simulated. However, the comparison of the soffit velocity, measured with the PDV unit and numerical model showed shortcomings of the numerical model. These numerical model inaccuracies are discussed and their reasons presented.

Název v anglickém jazyce

Experimental and numerical evaluation of uhpfrc slabs subjected to contact and close-in explosion

Popis výsledku anglicky

This paper presents achievements in the field of the numerical simulation of the fibre reinforced concrete (FRC) and ultra-high performance fibre reinforced concrete (UHPFRC). The numerical simulations were performed to verify results of two experimental programmes focused on the blast resistance of FRC and UHPFRC. The response of the FRC and UHPFRC slabs to the contact and near-field blast was studied in these two experiments. As the detail behaviour of specimens could not be observed because of the blast load, the numerical models were prepared. The accuracy of the numerical models was evaluated based on the comparison of numerical and experimental results. Different approaches for blast simulation were tested and compared. The results indicate that the various phenomena (e.g. overpressure propagation, stress cumulation, crack propagation and damage extend) can be successfully simulated. However, the comparison of the soffit velocity, measured with the PDV unit and numerical model showed shortcomings of the numerical model. These numerical model inaccuracies are discussed and their reasons presented.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-23067S" target="_blank" >GA17-23067S: Charakterizace chování betonu vystaveného výbuchu a následnému požáru</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

26th Concrete Days

ISBN

978-3-0357-1668-9

ISSN

1012-0394

e-ISSN

1662-9779

Počet stran výsledku

6

Strana od-do

180-185

Název nakladatele

Trans Tech Publications

Místo vydání

Curich

Místo konání akce

Hradec Králové

Datum konání akce

20. 11. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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