Susceptibility of U-profiles with different geometry and porosity to galloping

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00534317" target="_blank" >RIV/68378297:_____/20:00534317 - isvavai.cz</a>

Výsledek na webu

<a href="https://generalconferencefiles.s3-eu-west-1.amazonaws.com/eurodyn_2020_ebook_procedings_vol1.pdf" target="_blank" >https://generalconferencefiles.s3-eu-west-1.amazonaws.com/eurodyn_2020_ebook_procedings_vol1.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Susceptibility of U-profiles with different geometry and porosity to galloping

Popis výsledku v původním jazyce

The proposed paper deals with the experimental investigation of the susceptibility of the set of slender beams having different U-shaped cross-sections typical, e.g., for footbridges and bridge decks with railings or with wind barriers, to the classical galloping. In particular, the influence of the depth of U-shaped profiles having constant side ratio equal to 2 onto aerodynamic drag and lift coefficients was tested in the wind tunnel. Moreover, the effect of the porosity of the vertical sides of U-shaped cross-sections on these coefficients and galloping stability was also studied. The analysis of the proneness of investigated non-porous U-beams to galloping based on the classical quasi-steady theory indicates that the influence of the depth is minimal. On the other hand, when the vertical sides of U-profiles are porous, the depth represents an important factor influencing the size and angular range of positive slope of the transversal force coefficient. The comparison with the outcomes from the tests of the prisms with rectangular cross-sections is also presented and the differences are discussed in detail.

Název v anglickém jazyce

Susceptibility of U-profiles with different geometry and porosity to galloping

Popis výsledku anglicky

The proposed paper deals with the experimental investigation of the susceptibility of the set of slender beams having different U-shaped cross-sections typical, e.g., for footbridges and bridge decks with railings or with wind barriers, to the classical galloping. In particular, the influence of the depth of U-shaped profiles having constant side ratio equal to 2 onto aerodynamic drag and lift coefficients was tested in the wind tunnel. Moreover, the effect of the porosity of the vertical sides of U-shaped cross-sections on these coefficients and galloping stability was also studied. The analysis of the proneness of investigated non-porous U-beams to galloping based on the classical quasi-steady theory indicates that the influence of the depth is minimal. On the other hand, when the vertical sides of U-profiles are porous, the depth represents an important factor influencing the size and angular range of positive slope of the transversal force coefficient. The comparison with the outcomes from the tests of the prisms with rectangular cross-sections is also presented and the differences are discussed in detail.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA19-21817S" target="_blank" >GA19-21817S: Neholonomní interakce a dynamická stabilita aeroelastických soustav</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

EURODYN 2020. Proceedings of the XI International conference on structural dynamics

ISBN

978-618-85072-0-3

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

621-630

Název nakladatele

National Technical University of Athens (NTUA)

Místo vydání

Athens

Místo konání akce

Athény

Datum konání akce

23. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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