Developments in Fluid Film Bearing Technology

被引:0
作者
El-Shafei, A. [1 ]
机构
[1] Cairo Univ, Fac Engn, Dept Mech Design & Prod, Giza 12316, Egypt
来源
IUTAM SYMPOSIUM ON EMERGING TRENDS IN ROTOR DYNAMICS | 2011年 / 25卷
关键词
Fluid film bearings; Instability; Stability threshold; Oil whirl; Oil whip; Stable bearing design; Journal bearings; Active Magnetic bearings; WHIRL; ROTOR;
D O I
10.1007/978-94-007-0020-8_18
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper presents some new developments in Fluid Film Bearing (FFB) technology. The phenomena of oil whirl and oil whip leading to instability in FFB supported rotors; limit the performance of rotating machinery. This paper presents some new developments that affect the instability threshold, namely the positive effect of angular misalignment on the instability threshold and related design improvements in FFB design. In addition, the concept of an integrated FFB with active magnetic bearing (AMB) is discussed with implications on improving the stability threshold, and actively controlling FFBs.
引用
收藏
页码:201 / 215
页数:15
相关论文
共 11 条
[1]  
AHMED AM, 2008, ASME, V130
[2]   Some experiments on oil whirl and oil whip [J].
El-Shafei, A. ;
Tawfick, S. H. ;
Raafat, M. S. ;
Aziz, G. M. .
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2007, 129 (01) :144-153
[3]  
ELSHAFEI A, 2005, Patent No. 20050275300
[4]  
ELSHAFEI A, Patent No. 12121976
[5]  
ELSHAFEI A, 2008, Patent No. 20080224556
[6]  
ELSHAFEI A, Patent No. 11147762
[7]  
ELSHAFEI A, 2010, ASME, V132
[8]  
ELSHAFEI A, 2009, ASME STLE 2009 INT J, P171
[9]   Instability boundary for rotor-hydrodynamic bearing systems, Part 1: Jeffcott rotor with external damping [J].
Guo, ZL ;
Kirk, RG .
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, 2003, 125 (04) :417-422
[10]   WHIRL AND WHIP - ROTOR BEARING STABILITY PROBLEMS [J].
MUSZYNSKA, A .
JOURNAL OF SOUND AND VIBRATION, 1986, 110 (03) :443-462