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    Determination of the Load Capacity of a Finite Width Journal Bearing by a Finite-Element Method in the Case of a Non-Newtonian Lubricant

    Source: Journal of Tribology:;1984:;volume( 106 ):;issue: 002::page 285
    Author:
    P. Bourgin
    ,
    B. Gay
    DOI: 10.1115/1.3260906
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Additives are commonly used to improve the performance of lubricating oils. Correlatively, the lubricant viscosity depends on the rate of shear: the fluid becomes non-Newtonian. Assuming that the nonlinear relationship between the rate of strain tensor and the stress tensor is cubic, the film equations are derived within the approximations of lubrication theory. The governing equation, which generalizes the Reynolds’ equation, is a nonlinear partial differential equation, subject to two nonlinear constraints. The particular case of a finite width journal bearing is considered here; this problem is solved by the finite-element method, using a gradient technique. The numerical results are compared with established results for newtonian lubricants. The influence of the non-Newtonian parameter on the pressure field and on the bearing capacity is predicted.
    keyword(s): Lubricants , Stress , Finite element methods , Journal bearings , Equations , Gradients , Lubricating oils , Partial differential equations , Stress tensors , Lubrication theory , Load bearing capacity , Tensors , Approximation , Shear (Mechanics) , Pressure , Fluids AND Viscosity ,
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      Determination of the Load Capacity of a Finite Width Journal Bearing by a Finite-Element Method in the Case of a Non-Newtonian Lubricant

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    http://yetl.yabesh.ir/yetl1/handle/yetl/99097
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    contributor authorP. Bourgin
    contributor authorB. Gay
    date accessioned2017-05-08T23:18:59Z
    date available2017-05-08T23:18:59Z
    date copyrightApril, 1984
    date issued1984
    identifier issn0742-4787
    identifier otherJOTRE9-28435#285_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/99097
    description abstractAdditives are commonly used to improve the performance of lubricating oils. Correlatively, the lubricant viscosity depends on the rate of shear: the fluid becomes non-Newtonian. Assuming that the nonlinear relationship between the rate of strain tensor and the stress tensor is cubic, the film equations are derived within the approximations of lubrication theory. The governing equation, which generalizes the Reynolds’ equation, is a nonlinear partial differential equation, subject to two nonlinear constraints. The particular case of a finite width journal bearing is considered here; this problem is solved by the finite-element method, using a gradient technique. The numerical results are compared with established results for newtonian lubricants. The influence of the non-Newtonian parameter on the pressure field and on the bearing capacity is predicted.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDetermination of the Load Capacity of a Finite Width Journal Bearing by a Finite-Element Method in the Case of a Non-Newtonian Lubricant
    typeJournal Paper
    journal volume106
    journal issue2
    journal titleJournal of Tribology
    identifier doi10.1115/1.3260906
    journal fristpage285
    journal lastpage290
    identifier eissn1528-8897
    keywordsLubricants
    keywordsStress
    keywordsFinite element methods
    keywordsJournal bearings
    keywordsEquations
    keywordsGradients
    keywordsLubricating oils
    keywordsPartial differential equations
    keywordsStress tensors
    keywordsLubrication theory
    keywordsLoad bearing capacity
    keywordsTensors
    keywordsApproximation
    keywordsShear (Mechanics)
    keywordsPressure
    keywordsFluids AND Viscosity
    treeJournal of Tribology:;1984:;volume( 106 ):;issue: 002
    contenttypeFulltext
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