Original title:
Analysis of van der Pol equation on slow time scale for combined random and harmonic excitation
Authors:
Náprstek, Jiří ; Fischer, Cyril Document type: Papers Conference/Event: Computational mechanics 2022. Conference with international participation /37./, Srní (CZ), 20221107
Year:
2022
Language:
eng Abstract:
Vortex shedding represents one of the most important processes that constantly attract the attention of experimental and theoretical research. A number of non-linear effects arise from the fluid-structure interaction. The non-stationary response in the vicinity of the lock-in region has a quasi-periodic character, beating frequency of which varies considerably with the distance from the lock-in frequency. This property is significantly affected by the assumption of combined random and harmonic excitation. This paper describes several details that contribute to the probabilistic characteristics of the system on a time-slow scale using partial response amplitudes.
Keywords:
Fokker-Planck equation; SDOF oscillator; slow-time system Project no.: GC21-32122J (CEP) Funding provider: GA ČR Host item entry: Proceedings of Computational mechanics 2022, ISBN 978-80-261-1116-0
Institution: Institute of Theoretical and Applied Mechanics AS ČR
(web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences. Original record: https://hdl.handle.net/11104/0335765