000000922 001__ 922
000000922 005__ 20141118153511.0
000000922 04107 $$acze
000000922 046__ $$k2002-05-13
000000922 100__ $$aPospíšil, Stanislav
000000922 24500 $$aINSTABILITY ONSET OF RECTANGULAR PRISMATIC BEAMS IN THE WIND FLOW
000000922 24630 $$n8.$$pEngineering Mechanics 2002
000000922 260__ $$bInstitute of Mechanics and Solids, FME, TU Brno
000000922 506__ $$arestricted
000000922 520__ $$2cze$$aAbstrakt: This paper describes a part of theoretical and experimental research dealing with the problem of the aeroelastic instability onset of slender rectangular beams in the air stream. The fluid-structure interaction response is modeled using two degrees-of-freedom system oscillating in the potential flow. The coupling of the translation and rotation is due to nonconservative and gyroscopic forces. The linearized differential equations of motion are solved qualitatively and the solution is analyzed in the frequency plane. Numerical solution of four examples is based on the aerodynamics lift and moments that are expressed by means of Theodorsen's circulatory function. Solution is given in the form of frequencies of the aeroelastic modes and the critical flutter velocity. A mechanical model of a structure with adjustable parameters has been designed in order to compare the theoretical results with forthcoming experiments in the wind tunnel.
000000922 520__ $$2eng$$aAbstract: This paper describes a part of theoretical and experimental research dealing with the problem of the aeroelastic instability onset of slender rectangular beams in the air stream. The fluid-structure interaction response is modeled using two degrees-of-freedom system oscillating in the potential flow. The coupling of the translation and rotation is due to nonconservative and gyroscopic forces. The linearized differential equations of motion are solved qualitatively and the solution is analyzed in the frequency plane. Numerical solution of four examples is based on the aerodynamics lift and moments that are expressed by means of Theodorsen's circulatory function. Solution is given in the form of frequencies of the aeroelastic modes and the critical flutter velocity. A mechanical model of a structure with adjustable parameters has been designed in order to compare the theoretical results with forthcoming experiments in the wind tunnel.
000000922 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000000922 7112_ $$aEngineering Mechanics 2002$$cSvratka (CZ)$$d2002-05-13 / 2002-05-16$$gEM2002
000000922 720__ $$aPospíšil, Stanislav$$iNáprstek, Jiří$$iFischer, Cyril
000000922 8560_ $$ffischerc@itam.cas.cz
000000922 8564_ $$s265255$$uhttps://invenio.itam.cas.cz/record/922/files/Pospisil.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000000922 962__ $$r451
000000922 980__ $$aPAPER