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EnglishThe present study aimed at investigating the role played by the description of the drag component on the predicted flutter velocity (and frequency) of very long-span suspension bridges. Based on a detailed finite element model of the central span of the Akashi Kaikyo Bridge, implemented in ANSYS, flutter analyses were run according to the following descriptions of the wind aerodynamic actions: (a) unsteady lift, moment and drag; (b) unsteady lift and moment plus steady drag, and (c) unsteady lift and moment, without drag. The finite element results are compared with those obtained by an in-house MATLAB code based on a semi-analytic continuum model. The latter includes flexural-torsional second-order effects induced by steady drag force in the bridge’s equations of motion, in addition to the unsteady lift and moment actions.
On the influence of drag force modeling in long-span suspension bridge flutter analysis / Piana, Gianfranco; Carpinteri, Alberto. - STAMPA. - (2020), pp. 1387-1396. ((Intervento presentato al convegno 24th Conference of the Italian Association of Theoretical and Applied Mechanics, AIMETA 2019 tenutosi a Roma, Italia nel 15-19/09/2019.
| Titolo: | On the influence of drag force modeling in long-span suspension bridge flutter analysis | |
| Autori: | ||
| Data di pubblicazione: | 2020 | |
| Abstract: | The present study aimed at investigating the role played by the description of the drag component... on the predicted flutter velocity (and frequency) of very long-span suspension bridges. Based on a detailed finite element model of the central span of the Akashi Kaikyo Bridge, implemented in ANSYS, flutter analyses were run according to the following descriptions of the wind aerodynamic actions: (a) unsteady lift, moment and drag; (b) unsteady lift and moment plus steady drag, and (c) unsteady lift and moment, without drag. The finite element results are compared with those obtained by an in-house MATLAB code based on a semi-analytic continuum model. The latter includes flexural-torsional second-order effects induced by steady drag force in the bridge’s equations of motion, in addition to the unsteady lift and moment actions. | |
| ISBN: | 978-3-030-41056-8 978-3-030-41057-5 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Piana Carpinteri XXIV AIMETA 2019.pdf | Articolo principale | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
| AIMETA_2019_Paper_222.pdf | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11583/2863099
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