This work deals with the aerodynamic nonlinearities related to the slow variation of the angle of attack produced by large-scale atmospheric turbulence. A time-variant self-excited force model is proposed, where self-excited forces are conceived as parametric functions of the angle of attack. The model is identified and validated using specific wind tunnel tests for two different bridge cross-sections, showing excellent prediction capabilities.
A model for nonlinear buffeting of long-span suspension bridges: time-variant self-excited forces / N. Barni, O. A. Øiseth, Claudio Mannini. - ELETTRONICO. - (2022), pp. 511-514. (Intervento presentato al convegno 8th European and African Conference on Wind Engineering EACWE tenutosi a Bucarest, Romania nel 20-23 September 2022).
A model for nonlinear buffeting of long-span suspension bridges: time-variant self-excited forces
N. Barni
Conceptualization
;Claudio ManniniConceptualization
2022
Abstract
This work deals with the aerodynamic nonlinearities related to the slow variation of the angle of attack produced by large-scale atmospheric turbulence. A time-variant self-excited force model is proposed, where self-excited forces are conceived as parametric functions of the angle of attack. The model is identified and validated using specific wind tunnel tests for two different bridge cross-sections, showing excellent prediction capabilities.
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