Modeling aeroelastic phenomena via stochastic resonance in nonlinear bistable oscillators

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F25%3A00638435" target="_blank" >RIV/68378297:_____/25:00638435 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.4203/ccc.10.7.1" target="_blank" >https://doi.org/10.4203/ccc.10.7.1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4203/ccc.10.7.1" target="_blank" >10.4203/ccc.10.7.1</a>

Result language
angličtina
Original language name
Modeling aeroelastic phenomena via stochastic resonance in nonlinear bistable oscillators
Original language description
Stochastic resonance is a phenomenon where noise enhances a nonlinear system’s ability to respond to weak periodic excitation. This effect is particularly relevant in bistable systems encountered in post-critical aeroelastic conditions, where purely deterministic models fail to capture observed transitions under unsteady aerodynamic loading. This study explores stochastic resonance in a nonlinear Duffing-type oscillator driven by harmonic forcing and additive white noise, representing a reduced model of a prismatic beam in crossflow, inspired by wind tunnel tests on bridge-like structures. The paper complements a previously developed approximative framework for analysis of the Fokker–Planck equation, which employs a periodic expansion linked with the method of stochastic moments. This approach provides a detailed and structured view of the evolving probability density, offering greater interpretability than standard black-box finite element methods, which are also used for comparison. The results are examined in detail against a FEM benchmark, and potential directions for improving the method—particularly with respect to transient accuracy and numerical stability—are outlined.
Czech name
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Czech description
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Project
<a href="/en/project/GA24-13061S" target="_blank" >GA24-13061S: The Combined Effects of Aeroelastic Instabilities on Civil Engineering Structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the eighteenth International conference on civil, structural and environmental engineering computing
ISBN
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ISSN
2753-3239
e-ISSN
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Number of pages
10
Pages from-to
7.1
Publisher name
Civil-Comp Press
Place of publication
Edinburgh
Event location
Cagliari
Event date
Aug 27, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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