scholarly journals Effect of Manufacturing Errors on Static Characteristics of Four-Lobe Hydrodynamic Journal Bearings - Static Characteristics Analysis of Bearings When Position of Side Lobe is Shifted Due to Manufacturing Errors and Attempts to Create Design Guidelines for Bearings

2017 ◽  
Vol 52 (1) ◽  
pp. 101-110 ◽  
Author(s):  
Toshikazu Fujino ◽  
Katsumi Iwamoto ◽  
Masajiro Abe ◽  
Kentaro Tanaka
Keyword(s):  
Side Lobe ◽  
Design Guidelines ◽  
Journal Bearings ◽  
Static Characteristics ◽  
Manufacturing Errors ◽  
Characteristics Analysis

Effects of manufacturing errors on the static characteristics of aerostatic journal bearings with porous restrictor

2017 ◽  
Vol 115 ◽  
pp. 246-260 ◽  
Author(s):  
Hailong Cui ◽  
Yang Wang ◽  
Xiaobin Yue ◽  
Ming Huang ◽  
Wei Wang
Keyword(s):  
Journal Bearings ◽  
Static Characteristics ◽  
Manufacturing Errors

scholarly journals Static Characteristics of Four-Lobe Hydrodynamic Journal Bearings with Bottom Sliding Surface Inclined Due to Manufacturing Errors

2019 ◽  
Vol 54 (1) ◽  
pp. 103-110 ◽  
Author(s):  
Toshikazu Fujino ◽  
Katsumi Iwamoto ◽  
Tatsuhiro Jibiki ◽  
Masajiro Abe
Keyword(s):  
Journal Bearings ◽  
Sliding Surface ◽  
Static Characteristics ◽  
Manufacturing Errors

STATIC CHARACTERISTICS OF OFFSET 8-LOBE JOURNAL BEARINGS

Tribologia ◽  
2021 ◽  
Vol 295 (1) ◽  
pp. 39-51
Author(s):  
Stanisław Strzelecki
Keyword(s):  
Laminar Flow ◽  
Equilibrium Position ◽  
Iterative Procedure ◽  
Journal Bearing ◽  
Journal Bearings ◽  
Diameter Ratio ◽  
Static Characteristics ◽  
Oil Film ◽  
Cooling Conditions ◽  
Grinding Machines

The 8-lobe journal bearings have found application in the bearing systems of spindles of grinding machines. The design of bearings and the large number of lobes and oil grooves assures good cooling conditions of bearing. These bearings can be manufactured as the bearings with cylindrical, non-continuous operating surfaces separated by six lubricating grooves, bearings with the pericycloidal shape of the bearing bore, and as offset journal bearing. This paper presents the results of the computation of static characteristics of an offset 8-lobe journal bearing operating under the conditions of an aligned axis of journal and bush, adiabatic oil film, and at the static equilibrium position of journal. Different values of bearing length to diameter ratio, relative clearance, and lobe relative clearance were assumed. Reynolds' energy and viscosity equations were solved by means of an iterative procedure. Adiabatic oil film, laminar flow in the bearing gap, and aligned orientation of journal in the bearing were considered.

Characteristics Analysis of Saw Filter Using Al0.36Ga0.64N Thin Film

2002 ◽  
Vol 720 ◽  
Author(s):  
Sun-Ki Kim ◽  
Min-Jung Park ◽  
Cheol-Yeong Jang ◽  
Hyun-Chul Choi ◽  
Jung-Hee Lee ◽  
...  
Keyword(s):  
Thin Film ◽  
Insertion Loss ◽  
Coupling Coefficient ◽  
Electromechanical Coupling ◽  
Side Lobe ◽  
Electromechanical Coupling Coefficient ◽  
Device Performance ◽  
Saw Devices ◽  
Characteristics Analysis ◽  
Temperature Coefficient Of Frequency

AbstractAlxGa1-xN sample with x=0.36 was epitaxially grown on sapphire by MOCVD. SAW velocity of 5420 m/s and TCF (temperature coefficient of frequency) of -51.20 ppm/°C were measured from the SAW devices fabricated on the AlxGa1-xN sample, when kh value was 0.078, at temperatures between –30 °C and 60 °C Electromechanical coupling coefficient was ranged from 1.26 % to 2.22 %. The fabricated SAW filter have shown a good device performance with insertion loss of -33.853 dB and side lobe attenuation of 20 dB.

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