000021492 001__ 21492
000021492 005__ 20170522124357.0
000021492 04107 $$aeng
000021492 046__ $$k2017-05-15
000021492 100__ $$aZapoměl, J.
000021492 24500 $$aREDUCTION OF THE ENERGY LOSSES BY APPLICATION OF CONTROLLABLE SQUEEZE FILM DAMPERS

000021492 24630 $$n23.$$pEngineering Mechanics 2017
000021492 260__ $$bBrno University of Technology, Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno
000021492 506__ $$arestricted
000021492 520__ $$2eng$$aThe unbalance induces lateral oscillations of rotors and forces transmitted to the rotor casing. The squeeze film dampers with integrated rolling element bearings represent a technological solution, which enables to reduce their magnitude, and consequently the resistance against the rotor rotation. To achieve optimum performance of the damping devices, their damping effect must be adapable to the current rotor speed. This paper reports a proposal of a controllable squeeze film damper, the damping effect of which is controlled mechanically by shifting its outer ring in the axial direction. The developed mathematical model of the damper is based on assumptions of the classical theory of lubrication and is completed with implementation of a gas cavitation. The results of the computational simulations show that an appropriate control of the damping force enables to reduce the energy losses in a wide range of operating speeds.

000021492 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021492 653__ $$aSqueeze film damper, Controllable damping, Friction in bearings, Energy losses reduction.

000021492 7112_ $$aEngineering Mechanics 2017$$cSvratka, CZ$$d2017-05-15 / 2017-05-18$$gEM2017
000021492 720__ $$aZapoměl, J.$$iKozánek, J.$$iFerfecki, P.
000021492 8560_ $$ffischerc@itam.cas.cz
000021492 8564_ $$s788580$$uhttps://invenio.itam.cas.cz/record/21492/files/1110.pdf$$yOriginal version of the author's contribution in proceedings, page 1110, section DYN.
000021492 962__ $$r21225
000021492 980__ $$aPAPER