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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Fluids and Structures

ISSN

0889-9746

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

91-107

Kód UT WoS článku

000361403500007

EID výsledku v databázi Scopus

2-s2.0-84939856893