Nonlinear dynamic analysis of a rotor system with fixed-tilting-pad self-acting gas-lubricated bearings support

2012 ◽  
Vol 69 (3) ◽  
pp. 877-890 ◽  
Author(s):  
Yanjun Lu ◽  
Yongfang Zhang ◽  
Xiaolei Shi ◽  
Weimin Wang ◽  
Lie Yu
Friction ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 930-944 ◽  
Author(s):  
Yingze Jin ◽  
Fei Chen ◽  
Jimin Xu ◽  
Xiaoyang Yuan

Abstract To reveal nonlinear dynamic rules of low viscosity fluid-lubricated tilting-pad journal bearings (TPJBs), the effects of design parameters on journal center orbits and dynamic minimum film thicknesses of water-lubricated TPJBs with and without static loads are investigated. The hydrodynamic bearing force used in the nonlinear dynamic analysis is an approximate analytical solution including the turbulence effect. The results reveal the methods for vibration suppression and load capacity improvement and give an optimal pivot offset and clearance ratio that can maximize the minimum film thickness. The results also show that four-pad TPJBs with loads between pads are preferred due to good dynamic performance and load capacity. This study would provide some guidance for nonlinear design of low viscosity fluid-lubricated TPJBs under dynamic loads.


2018 ◽  
Vol 94 (2) ◽  
pp. 1391-1408 ◽  
Author(s):  
Yihua Wu ◽  
Kai Feng ◽  
Yun Zhang ◽  
Wanhui Liu ◽  
Wenjun Li

2014 ◽  
Vol 38 (21-22) ◽  
pp. 5239-5255 ◽  
Author(s):  
Li-Hua Yang ◽  
Wei-Min Wang ◽  
Shi-Quan Zhao ◽  
Yan-Hua Sun ◽  
Lie Yu

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