Short-bearing approximation for full journal bearings

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Description

A short-bearing approximation of pressure distribution in the oil film is presented which is an extension of the pressure-distribution function of Michell and Cardullo and includes end-leakage effects. Equations giving applied load, attitude angle, location and magnitude of peak film pressure, friction, and required oil flow rate as functions of the eccentricity ratio are also given. The capacity number, a basic non dimensional quantity resulting from this analysis is the product of the Sommerfeld number and the square of the length-diameter ratio. Curves determined by this analysis are compared with previously published experimental data and theoretical curves of Sommerfeld and ... continued below

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Ocvirk, F W October 1, 1952.

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  • Main Title: Short-bearing approximation for full journal bearings
  • Series Title: NACA Technical Notes

Description

A short-bearing approximation of pressure distribution in the oil film is presented which is an extension of the pressure-distribution function of Michell and Cardullo and includes end-leakage effects. Equations giving applied load, attitude angle, location and magnitude of peak film pressure, friction, and required oil flow rate as functions of the eccentricity ratio are also given. The capacity number, a basic non dimensional quantity resulting from this analysis is the product of the Sommerfeld number and the square of the length-diameter ratio. Curves determined by this analysis are compared with previously published experimental data and theoretical curves of Sommerfeld and Cameron and Wood. Conclusions reached indicate that this approximation is of practical value for analysis of short bearings.

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  • : 93R12831
  • URL: http://hdl.handle.net/2060/19930083541 External Link
  • Report No.: NACA-TN-2808
  • Center for AeroSpace Information Number: 19930083541
  • Archival Resource Key: ark:/67531/metadc56460

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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Creation Date

  • October 1, 1952

Added to The UNT Digital Library

  • Nov. 16, 2011, 7:33 a.m.

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  • Feb. 2, 2017, 3:56 p.m.

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Citations, Rights, Re-Use

Ocvirk, F W. Short-bearing approximation for full journal bearings, report, October 1, 1952; (digital.library.unt.edu/ark:/67531/metadc56460/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.