Results 181 to 190 of about 3,492 (237)

Routes to Chaos in Squeeze-Film Dampers

Design Engineering, 2004
This work reports on a numerical study undertaken to investigate the imbalance response of a rigid rotor supported by squeeze-film dampers. Two types of damper configurations were considered, namely, dampers without centering springs, and eccentrically operated dampers with centering springs.
Jawaid I. Inayat-Hussain   +1 more
openaire   +2 more sources

Application of Hydrostatic Squeeze-Film Dampers

A S L E Transactions, 1982
Squeeze-film dampers are often used to improve the stability of high-speed rotating machinery. The introduction of a hydrostatic bearing as an additional damper support can further optimize the loading capacity and damping effects of the support system.
K. C. Choy, J. D. Halloran
openaire   +1 more source

Squeeze Film Dampers: Amplitude Effects at Low Squeeze Numbers

Journal of Engineering for Industry, 1975
Gaseous squeeze film dampers are analyzed to determine the effect of periodic disturbance amplitude on the dynamic performance. Both circular and rectangular parallel surfaces are investigated. A solution of the nonlinear Reynolds equation is obtained by expanding the pressure in powers of the squeeze number σ, retaining up to and including terms 0(σ2).
A. Kent Stiffler, Martin H. Sadd
openaire   +1 more source

Effect of Squeeze Film Damper Land Geometry on Damper Performance

Tribology Transactions, 1994
Variable axial land geometry dampers can significantly alter the unbalance response, and in particular, the likelihood of undesirable jump behavior, of circular orbit-type squeeze film dampers. Assuming end feed, the pressure distribution, the fluid film forces, and the stiffness and damping coefficients are obtained for such variable axial land ...
Y. H. Wang, E. J. Hahn
openaire   +1 more source

Transitions to chaos in squeeze-film dampers

Communications in Nonlinear Science and Numerical Simulation, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Inayat-Hussain, Jawaid I.   +1 more
openaire   +3 more sources

Nonlinear Response of Short Squeeze Film Dampers

Journal of Lubrication Technology, 1980
This paper considers the methodology of numerical integration for prediction of dynamic response of squeeze film damper systems. A planar rotor carried in a squeeze film damper with linear centering spring is considered. Governing differential equations are expressed in polar coordinates, and fluid forces are obtained from the Ocvirk short bearing ...
D. L. Taylor, B. R. K. Kumar
openaire   +1 more source

Pressurized Oil Squeeze Film Dampers

Journal of Lubrication Technology, 1980
A pressurized oil squeeze film damper supporting a rigid rotor mounted in antifriction bearings is investigated. Orifice and inherent feed inlets are examined, and it is shown that the clearance determines the inlet resistance for a groove or slot. The film stiffness and damping forces are determined as a function of the restrictor coefficient, rotor ...
openaire   +1 more source

Eccentric Operation of the Squeeze-Film Damper

Journal of Lubrication Technology, 1978
The squeeze-film damper, undergoing a whirl orbit as may be caused by rotor unbalance, resists eccentricity of the whirl orbit with a static stiffness which is proportional to the dynamic force carried by the squeeze-film. In addition, the fluid film force would develop nonsynchronous components.
Coda H. T. Pan, Jorgen Tonnesen
openaire   +1 more source

Home - About - Disclaimer - Privacy