Počet záznamů: 1  

Post-critical behavior of an auto-parametric aero-elastic system with two degrees of freedom

  1. 1.
    0537600 - ÚTAM 2021 RIV GB eng J - Článek v odborném periodiku
    Náprstek, Jiří - Fischer, Cyril
    Post-critical behavior of an auto-parametric aero-elastic system with two degrees of freedom.
    International Journal of Non-Linear Mechanics. Roč. 121, May (2020), č. článku 103441. ISSN 0020-7462. E-ISSN 1878-5638
    Grant CEP: GA ČR(CZ) GA19-21817S
    Institucionální podpora: RVO:68378297
    Klíčová slova: non-linear aero-elastic system * generalized van der Pol equation * instability * Routh–Hurwitz conditions * flutter
    Obor OECD: Civil engineering
    Impakt faktor: 2.985, rok: 2020
    Způsob publikování: Omezený přístup
    https://doi.org/10.1016/j.ijnonlinmec.2020.103441

    A generalized two-degree-of-freedom non-linear mathematical system with non-linear gyroscopic and nonconservative terms was used to set up a model for heave and pitch self-excited motion. The stability conditions for a girder with a bluff cross-section in wind flow were identified and presented. The analysis, based on the Routh–Hurwitz conditions and a numerical evaluation of the model, comprises both the self-excited case and an assumption of a harmonic load. The boundaries between different response types that depend on the frequencies of two principal aero-elastic modes are shown. The properties of the response located at these limits and the tendencies of the response in their neighborhood are discussed. The results can be used to explain several experimentally observed effects.
    Trvalý link: http://hdl.handle.net/11104/0315423

     
     
Počet záznamů: 1  

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