Stability of two-degrees-of-freedom aero-elastic models with frequency and time variable parametric self-induced forces

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F15%3A00447164" target="_blank" >RIV/68378297:_____/15:00447164 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jfluidstructs.2015.05.010" target="_blank" >http://dx.doi.org/10.1016/j.jfluidstructs.2015.05.010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jfluidstructs.2015.05.010" target="_blank" >10.1016/j.jfluidstructs.2015.05.010</a>

Result language
angličtina
Original language name
Stability of two-degrees-of-freedom aero-elastic models with frequency and time variable parametric self-induced forces
Original language description
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 workswell 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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JM - Structural engineering
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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