Vibration Monitoring of the Gradual Worn in Journal Bearings

2020 ◽  
pp. 597-607
Author(s):  
Osama Hassin ◽  
Jiaojiao Ma ◽  
Hao Zhang ◽  
Fengshou Gu ◽  
Andrew D. Ball
Keyword(s):  
Journal Bearings ◽  
Vibration Monitoring

Influence of textured journal bearings on rotor's dynamic behavior

2019 ◽  
Author(s):  
Leandro Ito Ramos ◽  
Douglas Jhon Ramos ◽  
Gregory Bregion Daniel
Keyword(s):  
Dynamic Behavior ◽  
Journal Bearings

Optimum Design of Journal Bearings Dimensions for Rotating Machines

2020 ◽  
Vol 38 (10A) ◽  
pp. 1481-1488
Author(s):  
Tariq M. Hammza ◽  
Ehab N. Abas ◽  
Nassear R. Hmoad
Keyword(s):  
Aspect Ratio ◽  
Dynamic Response ◽  
Numerical Solution ◽  
Critical Speed ◽  
Design Method ◽  
Considerable Effect ◽  
Journal Bearings ◽  
Rotating Machines ◽  
Bearing Clearance ◽  
Study Results

The values of Many parameters which involve in the design of fluid film journal bearings mainly depend on the bearing applied load when using the conventional design method to design the journal bearings, in this study, as well as applied bearing load, the dynamic response and critical speed have been used to calculate the dimensions of journal bearings. In the field of rotating machine, especially a heavy-duty rotating machines, the critical speed and response are the main parameters that specify bearing dimensions. The bearing aspect ratio (bearing length to bore diameter) and bearing clearance have been determined based on rotor maximum critical speed and minimum response displacement. The analytical solution of rotor Eq. of motion was verified by numerical solution via using ANSYS Mechanical APDL 18.0 and by comparing the numerical solution with the preceding study. The final study results clearly showed that the bearing aspect ratio has little effect on the critical speed, but it has a high effect on the dynamic response also the bearing clearance has little effect on the critical speed and considerable effect on the dynamic response. The study showed that the more accurate values of bearing aspect ratio to make the response of rotor as low as possible are about 0.65 - 1 and bearing percent clearance is about 0.15 - 0.2 for different rotor dimensions.

Tribological Properties of Sn-Pb Based SnPbAlZn Journal Bearings

2012 ◽  
Vol 54 (10) ◽  
pp. 713-717
Author(s):  
Bekir Sadik Ünlü ◽  
Ahmet Murat Pinar ◽  
Kamil Özdin
Keyword(s):  
Tribological Properties ◽  
Journal Bearings
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