Study of aeroelastic stability of hanger in rectangular array vibrating in the wake
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F19%3A00509746" target="_blank" >RIV/68378297:_____/19:00509746 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Study of aeroelastic stability of hanger in rectangular array vibrating in the wake
Original language description
The paper describes the analysis of the destructive oscillation of a skewed steel rod with the length 21 m. The steel rod is a part of roof supporting bundle (rectangular array) of cylindrical hangers at the airport building, it is therefore exposed to frequent moderate and sometimes to strong winds with low turbulence. The vibration is analyzed from the aeroelastic perspective, i.e. the cause of the oscillation is analyzed as wake-induced vibration because the collapse was observed at the bottom downwind hanger in that array configuration. The normalized distance of hangers in horizontal and vertical directions is equal to 3.2 D with D being a diameter of the hanger cross section and 3.8 D, respectively. The analysis was carried out using two-dimensional numerical model, i.e. we considered the full wind pressure correlation over the cylinder’s surface for the preliminary analysis. The preliminary numerical results show that the strong oscillation and the collapse observed in the reality was caused by the wake-induced vortices shed at the windward rod(s) and attacking the leeward one. The numerical results are going to be validated in the wind tunnel tests on the sectional model of the hangers also configured in the identical four-cylinder array as on site.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů