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DYNAMICALLY LOADED JOURNAL BEARINGS: FINITE VOLUME METHOD ANALYSIS.

Author(s) : PRATA A. T.

Summary

THE PAPER PRESENTS A FORMULATION FOR THE ANALYSIS OF JOURNAL BEARINGS UNDER DYNAMICALLY LOADED CONDITIONS. THE SOLUTION OF THE REYNOLDS EQUATION IS DETERMINED USING A CONTROL VOLUME METHOD, WHICH ALLOWS MASS CONSERVATION OF THE OIL FILM TO BE ALWAYS SATISFIED REGARDLESS THE NUMBER OF GRID POINTS USED IN THE DOMAIN DISCRETIZATION. USE WAS MADE OF NONORTHOGONAL BOUNDARY FITTED COORDINATES. THE INCLUSION OF CAVITATION TURNED THE PROBLEM INTO A NONLINEAR FREE BOUNDARY VALUE PROBLEM, AND THE METHODOLOGY IS DESCRIBED IN DETAIL. RESULTS SHOWED THE POTENTIALITIES OF THE METHOD. IN THE EXAMPLE CHOSEN THE BEARING EXPERIENCES A LOAD THAT IS SUDDENLY INCREASED IN MAGNITUDE, AND, AFTER EQUILIBRIUM HAS BEEN REACHED, THE LOAD IS BROUGHT BACK TO ITS INITIAL VALUE ; THE JOURNAL DESCRIBES A DAMPED OSCILLATORY MOTION. WHEN CAVITATION IS NOT CONSIDERED, AND, INSTEAD, THE LUBRICANT FILM EXTENDS FROM ZERO TO HALF SOMMERFELD CONDITION, THE OSCILLATION IS LESS DAMPED.

Details

  • Original title: DYNAMICALLY LOADED JOURNAL BEARINGS: FINITE VOLUME METHOD ANALYSIS.
  • Record ID : 1989-0928
  • Languages: English
  • Publication date: 1988/07/18
  • Source: Source: Proc. 1988 int. Compress. Eng. Conf., Purdue Univ.
    vol. 1; 34-41; 4 fig.; 23 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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