Evolutive and nonlinear vibrations of rotor on aerodynamic bearings

被引：9
|
作者：
Pust, Ladislav [1 ]
Anek, Koz [1 ]
机构：
[1] ASCR, Inst Thermomech, Prague 18200 8, Czech Republic
来源：
NONLINEAR DYNAMICS | 2007年 / 50卷 / 04期
关键词：
rotordynamics; aerodynamic bearings; tilting pads; numerical solution; large displacements; response curves; vibrations;
D O I：
10.1007/s11071-007-9228-z
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The use of air as a lubricant in aerodynamic bearings is advantageous, particularly in the food industry. Aerodynamic bearings with tilting pads have complicated stiffness and damping properties and need a very detailed theoretical and experimental research. Response curves of rigid rotor supported on aerodynamic bearings are presented for a linear but evolutive mathematical model. Due to non-monotone properties of stiffness and damping matrices at variable revolutions, a new resonance appears. The mathematical model of rotor vibrations in the whole area of bearing clearance is also developed in the consideration of strongly nonlinear properties of aerodynamic bearing.
引用
收藏
页码：829 / 840
页数：12
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