文档介绍：International Journal of Pressure Vessels and Piping 87 (2010) 504e510
Contents lists available at ScienceDirect
International Journal of Pressure Vessels and Piping
journal homepage: ate/ijpvp
Control of vibration and resonance in aero engines and rotating
machinery e An overview
. Ewins
Imperial College London, United Kingdom
article info abstract
Article history: This paper presents an overview of the vibration problems which are experienced in running gas
Accepted 24 February 2009 turbines, and other high-speed machinery. The primary problem is that of resonance, where response
levels under dynamic loading can be 100 or 1000 times greater than the levels resulting from static
Keywords: loading of the same magnitude. These resonances can be caused by steady, non-oscillatory, forces being
Rotating machinery dynamics applied to a rotating disc and their prediction and observation from measurement under running
Forced vibration conditions are essential capabilities for the machinery dynamics engineer. Additional problems can arise
Resonance
if instabilities are encountered, either from aerodynamic sources (flutter) or from rotor dynamics. In all
Damping
Campbell diagram cases where severe vibrations are encountered, they must be controlled by the introduction of extra
Blades and bladed discs damping to the ponents, usually by incorporating friction dev