The effect of explosion in a tunnel tube on its damage

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00329295" target="_blank" >RIV/68407700:21110/18:00329295 - isvavai.cz</a>
Result on the web
<a href="http://www.scientific.net" target="_blank" >http://www.scientific.net</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.774" target="_blank" >10.4028/www.scientific.net/KEM.774</a>

Result language
angličtina
Original language name
The effect of explosion in a tunnel tube on its damage
Original language description
The aim of the work is to study the impact of an explosion in a tube on its damage. The theory of Landau-Liftschitz gas dynamics and the damage criterion by the Hoek-Brown in the structure are applied. If the charge is placed centrically in the tube, it is fairly easy to predict both the locations and damage levels. Therefore, the paper is oriented to the case where the charge is placed eccentrically. Air movement is described by the solution of non-linear Euler’s equations by final volume element method, while the response of the fiber reinforced concrete structure of the tube to impact waves is described by the time dependent 20-nodes flat shell elements. In order to ensure the geometric compatibility along the interface between the two media (structure, air), gas dynamics in the air is described by block elements, while the shell is approximated by the finite element. In this way, the problem solved is divided into a description of the air velocity and pressure and the velocity and stress in the solid phase, separately; interaction of the effects caused by the explosion initiated inside of the tube and its impact on the solid phase is concentrated along the interface between these two media. The calculation focuses on the early stages of interaction development when most likely damage is assumed.
Czech name
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Czech description
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Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
—
OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering

Project
<a href="/en/project/GA17-04204S" target="_blank" >GA17-04204S: Analysis of the impact of explosions in enclosed and semi-enclosed spaces</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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