000001701 001__ 1701
000001701 005__ 20141118153457.0
000001701 04107 $$acze
000001701 046__ $$k2007-05-14
000001701 100__ $$aPůst, L.
000001701 24500 $$aMOTION OF ROTOR SUPPORTED ON AERODYNAMIC BEARINGS

000001701 24630 $$n13$$pEngineering Mechanics 2007
000001701 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Prague
000001701 506__ $$arestricted
000001701 520__ $$2eng$$aThe tilting pad bearings are very often applied in high speed rotating machines. The exact solution of bearing characteristics, including the motion of tilting pads, is very difficult and not yet completely elaborated. An approximate method for calculation of rigid rotor motion with large amplitudes limited only by the bearing clearance is presented. The models of stiffness and damping forces valid for the entire area of journal motion in the aerodynamic bearing's clearance are based on the transformation of linear stiffness and damping characteristics calculated for two cases of stationary state and extended to the whole bearing field by using the correction function fcor(r). Differential equation of motion of rotor modeled by a mass point supported on aerodynamic bearing with proposed nonlinear characteristic is numerically solved and resulting time histories of journal motion and its plane trajectories are presented. The influence of eccentricity of rotor on its dynamic response are analysed as well.

000001701 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000001701 653__ $$a

000001701 7112_ $$aEngineering Mechanics 2007$$cSvratka (CZ)$$d2007-05-14 / 2007-05-17$$gEM2007
000001701 720__ $$aPůst, L.$$iKozánek, J.$$iŠimek, J.
000001701 8560_ $$ffischerc@itam.cas.cz
000001701 8564_ $$s587711$$uhttps://invenio.itam.cas.cz/record/1701/files/116-Pust-PT.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000001701 962__ $$r1585
000001701 980__ $$aPAPER