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Original title:
Numerical simulation of transient aeroelastic phenomena influenced by stochastic resonance in cross flow conditions
Authors: Náprstek, Jiří ; Fischer, Cyril
Document type: Papers
Conference/Event: Engineering mechanics 2025. International conference /31./, Medlov (CZ), 20250512
Year: 2025
Language: eng
Abstract: Stochastic resonance is a phenomenon observed in nonlinear dynamical systems with bistable behavior under combined deterministic and stochastic excitation. In its classical form, it is modeled using a Duffing-type oscillator subjected to harmonic forcing and additive white noise, resulting in noise-assisted transitions between stable states. This study investigates numerical methods for capturing transient effects related to stochastic resonance in the context of aeroelastic post-critical behavior, with a focus on a prismatic beam exposed to cross air flow. Motivated by wind tunnel observations, stochastic resonance is explored as a theoretical framework for modeling complex aeroelastic responses in bridge decks. Two computational approaches are employed: direct stochastic simulation using Monte Carlo methods, and numerical solution of the associated Fokker–Planck equation using the method of lines. The results highlight the capability of these methods to reproduce resonance-driven switching and demonstrate their potential for predicting transient aeroelastic responses relevant to the stability of slender structures under aerodynamic loading.\n
Keywords: aeroelasticity; Duffing oscillator; Fokker-Planck equation; stochastic resonance
Project no.: GA24-13061S (CEP)
Funding provider: GA ČR
Host item entry: Engineering mechanics 2025. Book of full texts, ISBN 978-80-86246-96-3, ISSN 1805-8248
Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0366377
Permalink: http://www.nusl.cz/ntk/nusl-679008
The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
Authors: Náprstek, Jiří ; Fischer, Cyril
Document type: Papers
Conference/Event: Engineering mechanics 2025. International conference /31./, Medlov (CZ), 20250512
Year: 2025
Language: eng
Abstract: Stochastic resonance is a phenomenon observed in nonlinear dynamical systems with bistable behavior under combined deterministic and stochastic excitation. In its classical form, it is modeled using a Duffing-type oscillator subjected to harmonic forcing and additive white noise, resulting in noise-assisted transitions between stable states. This study investigates numerical methods for capturing transient effects related to stochastic resonance in the context of aeroelastic post-critical behavior, with a focus on a prismatic beam exposed to cross air flow. Motivated by wind tunnel observations, stochastic resonance is explored as a theoretical framework for modeling complex aeroelastic responses in bridge decks. Two computational approaches are employed: direct stochastic simulation using Monte Carlo methods, and numerical solution of the associated Fokker–Planck equation using the method of lines. The results highlight the capability of these methods to reproduce resonance-driven switching and demonstrate their potential for predicting transient aeroelastic responses relevant to the stability of slender structures under aerodynamic loading.\n
Keywords: aeroelasticity; Duffing oscillator; Fokker-Planck equation; stochastic resonance
Project no.: GA24-13061S (CEP)
Funding provider: GA ČR
Host item entry: Engineering mechanics 2025. Book of full texts, ISBN 978-80-86246-96-3, ISSN 1805-8248
Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0366377
Permalink: http://www.nusl.cz/ntk/nusl-679008
The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers
Record created 2025-05-24, last modified 2025-06-08