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Stability of two-degrees-of-freedom aero-elastic models with frequency and time variable parametric self-induced forces
- 1.0447164 - ÚTAM 2016 RIV GB eng J - Článek v odborném periodiku
Náprstek, Jiří - Pospíšil, Stanislav - Yau, J. D.
Stability of two-degrees-of-freedom aero-elastic models with frequency and time variable parametric self-induced forces.
Journal of Fluids and Structures. Roč. 57, August (2015), s. 91-107. ISSN 0889-9746. E-ISSN 1095-8622
Grant CEP: GA MŠMT(CZ) LO1219; GA ČR(CZ) GC13-34405J
Institucionální podpora: RVO:68378297
Klíčová slova: aero-elastic system * self-excited vibration * dynamic stability * Routh–Hurwitz conditions * flutter derivatives * divergence
Kód oboru RIV: JM - Inženýrské stavitelství
Impakt faktor: 1.709, rok: 2015
http://dx.doi.org/10.1016/j.jfluidstructs.2015.05.010
The lowest critical state of slender systems representing long suspension bridges can be investigated using two degree of freedom linear models.Initially,the neutral model with aero-elastic forces treated as constants can be used and such approach works well on the theoretical level.However,because time dependency is neglected,it is naturally limited to the very close neighborhood of the bifurcation point.Thus,an approach using aero- elastic coefficients known as flutter derivatives was introduced in the past.The present paper combines these models together on one common basis and establishes linkage to avoid the time–frequency duality.The stability limits are analysed by means of the generalized Routh–Hurwitz approach and Liénard theorems. Some examples of bridge stability analyses are provided using experimentally ascertained or literature based data.
Trvalý link: http://hdl.handle.net/11104/0249090
Název souboru Staženo Velikost Komentář Verze Přístup 0447164_2015_Naprstek_Pospisil_Yau_Stability_of_two-degrees-of-freedom_aero-elastic_models_with_frequency_and_time_variable_parametric_self-induced_forces.pdf 1 2 MB Autorský preprint vyžádat 0447164_2015_Naprstek_Pospisil_Yau_Stability_of_two-degrees-of-freedom_aero-elastic_models_with_frequency_and_time_variable_parametric_self-induced_forces_IR.pdf 4 1.2 MB Autorský postprint povolen
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