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• W3123095136 endingPage "103201" @default.
• W3123095136 startingPage "103201" @default.
• W3123095136 abstract "High-performance flutter and post-flutter predictions are critical in the design of a vast range of nonlinear fluid-structural systems. However, these predictions are often unfeasible due to their high computational cost. Moreover, traditional methods for flutter and post-flutter predictions are model intrusive and limited to one varying parameter at a time. To address these shortcomings, this paper introduces a novel output-based method for forecasting flutter bifurcations and post-flutter dynamics in nonlinear fluid-structural systems with multiple varying parameters. The proposed method uses only output data from a handful of transient responses in the pre-flutter regime to predict the flutter boundary and a range of the bifurcation diagram. The method is demonstrated in analytical systems where the predicted bifurcation diagrams match the exact solutions. Next, the method is applied to a geometrically nonlinear wing considering variations in the flow speed and torsion stiffness. The predicted bifurcation diagrams closely agree with time-marching solutions despite the proposed method requires only a handful of transient calculations. These results show that the proposed method enables computationally efficient and accurate output-based flutter bifurcation forecasting in nonlinear fluid-structural systems with multiple varying parameters." @default.
• W3123095136 created "2021-02-01" @default.
• W3123095136 creator A5056343899 @default.
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• W3123095136 date "2021-02-01" @default.
• W3123095136 modified "2023-10-18" @default.
• W3123095136 title "Output-based flutter bifurcation forecasting in nonlinear fluid-structural systems with multiple varying parameters" @default.
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• W3123095136 doi "https://doi.org/10.1016/j.jfluidstructs.2020.103201" @default.
• W3123095136 hasPublicationYear "2021" @default.
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