000021795 001__ 21795
000021795 005__ 20170622131305.0
000021795 04107 $$aeng
000021795 046__ $$k2017-06-15
000021795 100__ $$aYing, Xuyong
000021795 24500 $$aAERODYNAMIC ENERGY ANALYSIS OF A BRIDGE DECK DURING LIMIT CYCLE FLUTTER

000021795 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021795 260__ $$bNational Technical University of Athens, 2017
000021795 506__ $$arestricted
000021795 520__ $$2eng$$aBased on ANSYS FLUENT, a fluid-structure interaction (FSI) model has been developed to investigate the limit cycle flutter (LCF) characteristics of a bridge deck. Its accuracy is verified by simulating the critical flutter state of one thin plate section with theoretical solutions. The unsteady flows around a elastically supported deck at different wind speeds and structural damping are simulated. The LCF phenomenon of the bridge deck is well captured by the present numerical model. The simulated results indicate that the LCF amplitude increases gradually with the wind speed until the divergent flutter occurs. The characteristics of aerodynamic energy input and dissipation during LCF are detailedly investigated. The total mechanical energy varies bounded during LCF, and it remains unchanged in a vibration period. For the LCF occurrence, the work done by aerodynamic forces and the dissipated energy by structural damping should cancel out.

000021795 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021795 653__ $$aLimit cycle flutter, CFD, Bridge deck, Aerodynamic energy, Unsteady flow.

000021795 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021795 720__ $$aYing, Xuyong$$iXu, Fuyou$$iZhang, Zhe
000021795 8560_ $$ffischerc@itam.cas.cz
000021795 8564_ $$s2776869$$uhttps://invenio.itam.cas.cz/record/21795/files/17959.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000021795 962__ $$r21500
000021795 980__ $$aPAPER