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Analytical Evaluation of the Static and Dynamic Characteristics of Three-Lobe Journal Bearings With Finite Length.

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Title: Analytical Evaluation of the Static and Dynamic Characteristics of Three-Lobe Journal Bearings With Finite Length.
Authors: Chasalevris, Athanasios1 chasalevris@sdy.tu-darmstadt.de
Source: Journal of Tribology. Oct2015, Vol. 137 Issue 4, p1-16. 16p.
Subjects: Journal bearings, Reynolds equations, Data analysis, Damping (Mechanics), Equilibrium, Approximation theory, Stiffness (Mechanics)
Abstract: The three-lobe bearings widely used in rotating machinery follow the design data evaluated using numerical methods for the solution of the Reynolds equation. This paper defines exact and approximate analytical solutions of the Reynolds equation for the case of three-lobe bearings with finite length. Dynamic characteristics are provided analytically with closed-form expressions for laminar regimes of operation, using an approximate analytical solution that proves to be reliable and of low cost of evaluation time. The results for eccentricity ratio, equilibrium locus, stiffness and damping coefficients are presented for a range of Sommerfeld number and different cases of load orientation and compared with theoretical and experimental data from the literature. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Tribology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 110971001
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Analytical Evaluation of the Static and Dynamic Characteristics of Three-Lobe Journal Bearings With Finite Length.
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  Data: <searchLink fieldCode="AR" term="%22Chasalevris%2C+Athanasios%22">Chasalevris, Athanasios</searchLink><relatesTo>1</relatesTo><i> chasalevris@sdy.tu-darmstadt.de</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Tribology%22">Journal of Tribology</searchLink>. Oct2015, Vol. 137 Issue 4, p1-16. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Journal+bearings%22">Journal bearings</searchLink><br /><searchLink fieldCode="DE" term="%22Reynolds+equations%22">Reynolds equations</searchLink><br /><searchLink fieldCode="DE" term="%22Data+analysis%22">Data analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Damping+%28Mechanics%29%22">Damping (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Equilibrium%22">Equilibrium</searchLink><br /><searchLink fieldCode="DE" term="%22Approximation+theory%22">Approximation theory</searchLink><br /><searchLink fieldCode="DE" term="%22Stiffness+%28Mechanics%29%22">Stiffness (Mechanics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The three-lobe bearings widely used in rotating machinery follow the design data evaluated using numerical methods for the solution of the Reynolds equation. This paper defines exact and approximate analytical solutions of the Reynolds equation for the case of three-lobe bearings with finite length. Dynamic characteristics are provided analytically with closed-form expressions for laminar regimes of operation, using an approximate analytical solution that proves to be reliable and of low cost of evaluation time. The results for eccentricity ratio, equilibrium locus, stiffness and damping coefficients are presented for a range of Sommerfeld number and different cases of load orientation and compared with theoretical and experimental data from the literature. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Tribology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1115/1.4030023
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 1
    Subjects:
      – SubjectFull: Journal bearings
        Type: general
      – SubjectFull: Reynolds equations
        Type: general
      – SubjectFull: Data analysis
        Type: general
      – SubjectFull: Damping (Mechanics)
        Type: general
      – SubjectFull: Equilibrium
        Type: general
      – SubjectFull: Approximation theory
        Type: general
      – SubjectFull: Stiffness (Mechanics)
        Type: general
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      – TitleFull: Analytical Evaluation of the Static and Dynamic Characteristics of Three-Lobe Journal Bearings With Finite Length.
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              M: 10
              Text: Oct2015
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              Value: 137
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