#7510. The use of a Laguerrian expansion basis as Volterra kernels for the efficient modeling of nonlinear self-excited forces on bridge decks

October 2026publication date
Proposal available till 19-05-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Civil and Structural Engineering;
Mechanical Engineering;
Renewable Energy, Sustainability and the Environment;
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Abstract:
In the last decade, the bridge aerodynamics community has pivoted towards the investigation and prediction of nonlinear aerodynamic phenomena. Several nonlinear models have been suggested, but the research community has yet to conclude on the best types of models for the wide range of nonlinearity observed in the research. Multiple authors have indicated that Volterra models show promise in modeling nonlinear bridge aerodynamics. However, efficient data-driven identification of the Volterra model is challenging. The proposed method improves the identification of the Volterra models, leading to a reduction in computational effort and simplification of the least-squares problem by parameterizing the kernels. The method is also more robust to noise and small perturbations in the experimental data, leading to smooth, decaying kernels that are interpretable in a physical context.
Keywords:
Aeroelasticity; Bridge aerodynamics; Double deck; Nonlinear; Volterra models

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