Modeling the impacts of explosion in enclosed spaces using discontinuous boundary element and finite volume methods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00315162" target="_blank" >RIV/68407700:21110/17:00315162 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.witpress.com/books/978-1-78466-227-1" target="_blank" >https://www.witpress.com/books/978-1-78466-227-1</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Modeling the impacts of explosion in enclosed spaces using discontinuous boundary element and finite volume methods

Popis výsledku v původním jazyce

This paper is aimed at studying the influence of loading due to shock waves in an enclosed space; underground parking is a typical example. The problem which is to be solved is divided into the description of motion and pressure in the air and in displacements and stresses in the solid phase, separately; the interaction of the effects arising in the air and the solid phase are concentrated along the boundary interface between the two media. As the free hexagon method (discontinuous boundary element method) has proved to be well suitable for solving nonlinear problems in structures, it is also used, slightly adjusted, here. In order to connect both media (structure, air), the gas-dynamics in the air is described, based on equations of conservations, by finite volume elements, their shapes are also hexagonal, to be in geometrical compliance with the rock and structure. The hexagonal shapes are arbitrary, i.e. not necessarily honey combs, like mostly used in finite elements. Note that such a shape of elements complies with the requirements for the finite volume method. The BEM describes the elasticity, or nonlinear behavior inside of each hexagonal element of the solid phase, while the mechanical behavior on the interfaces between the adjacent elements obeys the laws of Mohr-Coulomb localized damage.

Název v anglickém jazyce

Modeling the impacts of explosion in enclosed spaces using discontinuous boundary element and finite volume methods

Popis výsledku anglicky

This paper is aimed at studying the influence of loading due to shock waves in an enclosed space; underground parking is a typical example. The problem which is to be solved is divided into the description of motion and pressure in the air and in displacements and stresses in the solid phase, separately; the interaction of the effects arising in the air and the solid phase are concentrated along the boundary interface between the two media. As the free hexagon method (discontinuous boundary element method) has proved to be well suitable for solving nonlinear problems in structures, it is also used, slightly adjusted, here. In order to connect both media (structure, air), the gas-dynamics in the air is described, based on equations of conservations, by finite volume elements, their shapes are also hexagonal, to be in geometrical compliance with the rock and structure. The hexagonal shapes are arbitrary, i.e. not necessarily honey combs, like mostly used in finite elements. Note that such a shape of elements complies with the requirements for the finite volume method. The BEM describes the elasticity, or nonlinear behavior inside of each hexagonal element of the solid phase, while the mechanical behavior on the interfaces between the adjacent elements obeys the laws of Mohr-Coulomb localized damage.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA17-04204S" target="_blank" >GA17-04204S: Analýza vlivu explozí v uzavřených a polouzavřených prostorách</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Boundary Elements and other Mesh Reduction Methods XXXX

ISBN

978-1-78466-227-1

ISSN

—

e-ISSN

—

Počet stran výsledku

13

Strana od-do

96-108

Název nakladatele

witpress

Místo vydání

Southampton

Místo konání akce

New Forest

Datum konání akce

12. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—